English

Alector, Inc.

EDGAR

ALEC Current report (8-K) · filed 2026-10-16

Annual consolidated revenue for 2025: about USD 21.05M, using the latest reported figures. The previous period, 2024, was about USD 100.6M.

Inspect reported changes Compare with another company Historical disclosures Search filings Segments

Watchlist

Latest quarter

Revenue

3.32 million USD

2026 Q2 · USD

Exact inputs and evidence

Revenue: 3320000 USD Source

Operating margin

-734.73%

2026 Q2 · %

Exact inputs and evidence

Operating Income: -24393000 USD Source
Revenue: 3320000 USD Source

Operating cash flow

-34.2 million USD

2026 Q2 · USD

Exact inputs and evidence

Operating Cash Flow: -84030000 USD Source
Operating Cash Flow: -49813000 USD Source

Free cash flow

-34.2 million USD

2026 Q2 · USD

Exact inputs and evidence

Operating Cash Flow: -84030000 USD Source
Operating Cash Flow: -49813000 USD Source
Capital Expenditure: 149000 USD Source
Capital Expenditure: 118000 USD Source

Cash and cash equivalents: 59.9 million USD 2026-06-30 Source
Exact value

59915000 USD
Long-term debt including current maturities: 10 million USD 2025-12-31 Source
Exact value

10000000 USD
Shares outstanding: 112 million shares 2026-06-30 Source
Exact value

111656805 shares

Reported share-count change

10.32% · 10.4 million shares

Year-over-year change in reported shares. Splits, issuance and buybacks can affect this figure; it does not isolate employee compensation or economic dilution.

Exact inputs and evidence

101212329 shares · 2025-06-30· Source
111656805 shares · 2026-06-30· Source

Trailing twelve months

The four most recent complete quarters added together. This gives a full-year view that includes the latest quarterly results.

Revenue

13.9 million USD

2025-07-01 – 2026-06-30

Exact inputs and evidence

Revenue: 3260000 USD · 2025-07-01 – 2025-09-30 Source
Revenue: 21045000 USD · 2025-01-01 – 2025-12-31 Source
Revenue: 14808000 USD · 2025-01-01 – 2025-09-30 Source
Revenue: 1046000 USD · 2026-01-01 – 2026-03-31 Source
Revenue: 3320000 USD · 2026-04-01 – 2026-06-30 Source

Net income

-118 million USD

2025-07-01 – 2026-06-30

Exact inputs and evidence

Net income: -34667000 USD · 2025-07-01 – 2025-09-30 Source
Net income: -142929000 USD · 2025-01-01 – 2025-12-31 Source
Net income: -105662000 USD · 2025-01-01 – 2025-09-30 Source
Net income: -22930000 USD · 2026-01-01 – 2026-03-31 Source
Net income: -22990000 USD · 2026-04-01 – 2026-06-30 Source

Operating cash flow

-158 million USD

2025-07-01 – 2026-06-30

Exact inputs and evidence

Operating cash flow: -142340000 USD · 2025-01-01 – 2025-09-30 Source
Operating cash flow: -109829000 USD · 2025-01-01 – 2025-06-30 Source
Operating cash flow: -184031000 USD · 2025-01-01 – 2025-12-31 Source
Operating cash flow: -142340000 USD · 2025-01-01 – 2025-09-30 Source
Operating cash flow: -49813000 USD · 2026-01-01 – 2026-03-31 Source
Operating cash flow: -84030000 USD · 2026-01-01 – 2026-06-30 Source
Operating cash flow: -49813000 USD · 2026-01-01 – 2026-03-31 Source

Capital expenditure

160 thousand USD

2025-07-01 – 2026-06-30

Exact inputs and evidence

Capital expenditure: 41000 USD · 2025-01-01 – 2025-09-30 Source
Capital expenditure: 30000 USD · 2025-01-01 – 2025-06-30 Source
Capital expenditure: 41000 USD · 2025-01-01 – 2025-12-31 Source
Capital expenditure: 41000 USD · 2025-01-01 – 2025-09-30 Source
Capital expenditure: 118000 USD · 2026-01-01 – 2026-03-31 Source
Capital expenditure: 149000 USD · 2026-01-01 – 2026-06-30 Source
Capital expenditure: 118000 USD · 2026-01-01 – 2026-03-31 Source

Free cash flow

-158 million USD

2025-07-01 – 2026-06-30

Exact inputs and evidence

Operating cash flow: -142340000 USD · 2025-01-01 – 2025-09-30 Source
Operating cash flow: -109829000 USD · 2025-01-01 – 2025-06-30 Source
Operating cash flow: -184031000 USD · 2025-01-01 – 2025-12-31 Source
Operating cash flow: -142340000 USD · 2025-01-01 – 2025-09-30 Source
Operating cash flow: -49813000 USD · 2026-01-01 – 2026-03-31 Source
Operating cash flow: -84030000 USD · 2026-01-01 – 2026-06-30 Source
Operating cash flow: -49813000 USD · 2026-01-01 – 2026-03-31 Source
Capital expenditure: 41000 USD · 2025-01-01 – 2025-09-30 Source
Capital expenditure: 30000 USD · 2025-01-01 – 2025-06-30 Source
Capital expenditure: 41000 USD · 2025-01-01 – 2025-12-31 Source
Capital expenditure: 41000 USD · 2025-01-01 – 2025-09-30 Source
Capital expenditure: 118000 USD · 2026-01-01 – 2026-03-31 Source
Capital expenditure: 149000 USD · 2026-01-01 – 2026-06-30 Source
Capital expenditure: 118000 USD · 2026-01-01 – 2026-03-31 Source

Includes later revisions to earlier periods. Annual charts exclude incomplete years.

Latest filing recorded: 2026-10-16.

Financial data available through: 2025-12-31.

Coverage by financial measure

Revenue: 10 of 11 periods available· newest 2025-12-31
Operating income: 10 of 11 periods available· newest 2025-12-31
Net income: 10 of 11 periods available· newest 2025-12-31
Operating cash flow: 10 of 11 periods available· newest 2025-12-31
Capital expenditure: 10 of 11 periods available· newest 2025-12-31
Total assets: 9 of 11 periods available· newest 2025-12-31
Total liabilities: 9 of 11 periods available· newest 2025-12-31
Current assets: 9 of 11 periods available· newest 2025-12-31
Current liabilities: 9 of 11 periods available· newest 2025-12-31
Cash and cash equivalents: 10 of 11 periods available· newest 2025-12-31
Long-term debt including current maturities: 2 of 11 periods available· newest 2025-12-31
Shares outstanding: 9 of 11 periods available· newest 2025-12-31

Coverage describes values retained in this snapshot. Missing values are not zero; loading limits are reported separately.

What changed year over year

Latest complete year compared with the corresponding period one year earlier. These are measured changes; they do not establish their business causes.

Revenue
-79.1%

Prior period

USD 100.56 million

2024-01-01 – 2024-12-31
Current period

USD 21.05 million

2025-01-01 – 2025-12-31

Exact inputs and evidence

21045000 − 100558000 = -79513000 USD

100558000 USD · 2024-01-01 – 2024-12-31
Inspect prior input Prior source
21045000 USD · 2025-01-01 – 2025-12-31
Inspect current input Current source

Share or cite

Citation for Year-over-year change in Revenue · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Year-over-year change in Revenue: -79513000 USD Concept: fundies:Revenue Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#period-changes-title Computed: Current period minus corresponding prior-year period Input fundies:Revenue: 21045000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#2059169 Filing: 000119312526071593 Input fundies:Revenue: 100558000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#2060863 Filing: 000119312526071593
The citation records this snapshot. The page link may show a newer release later.
Net income
−USD 23.88 million

Prior period

−USD 119.05 million

2024-01-01 – 2024-12-31
Current period

−USD 142.93 million

2025-01-01 – 2025-12-31

Exact inputs and evidence

-142929000 − -119049000 = -23880000 USD

-119049000 USD · 2024-01-01 – 2024-12-31
Inspect prior input Prior source
-142929000 USD · 2025-01-01 – 2025-12-31
Inspect current input Current source

Share or cite

Citation for Year-over-year change in Net income · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Year-over-year change in Net income: -23880000 USD Concept: fundies:NetIncome Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#period-changes-title Computed: Current period minus corresponding prior-year period Input fundies:NetIncome: -142929000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1800562 Filing: 000119312526071593 Input fundies:NetIncome: -119049000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1722524 Filing: 000119312526071593
The citation records this snapshot. The page link may show a newer release later.
Operating cash flow
+USD 45.87 million

Prior period

−USD 229.91 million

2024-01-01 – 2024-12-31
Current period

−USD 184.03 million

2025-01-01 – 2025-12-31

Exact inputs and evidence

-184031000 − -229905000 = 45874000 USD

-229905000 USD · 2024-01-01 – 2024-12-31
Inspect prior input Prior source
-184031000 USD · 2025-01-01 – 2025-12-31
Inspect current input Current source

Share or cite

Citation for Year-over-year change in Operating cash flow · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Year-over-year change in Operating cash flow: 45874000 USD Concept: fundies:OperatingCashFlow Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#period-changes-title Computed: Current period minus corresponding prior-year period Input fundies:OperatingCashFlow: -184031000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1896268 Filing: 000119312526071593 Input fundies:OperatingCashFlow: -229905000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1898226 Filing: 000119312526071593
The citation records this snapshot. The page link may show a newer release later.
Capital expenditure
-96.7%

Prior period

USD 1.26 million

2024-01-01 – 2024-12-31
Current period

USD 41,000

2025-01-01 – 2025-12-31

Exact inputs and evidence

41000 − 1255000 = -1214000 USD

1255000 USD · 2024-01-01 – 2024-12-31
Inspect prior input Prior source
41000 USD · 2025-01-01 – 2025-12-31
Inspect current input Current source

Share or cite

Citation for Year-over-year change in Capital expenditure · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Year-over-year change in Capital expenditure: -1214000 USD Concept: fundies:CapitalExpenditure Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#period-changes-title Computed: Current period minus corresponding prior-year period Input fundies:CapitalExpenditure: 41000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1903264 Filing: 000119312526071593 Input fundies:CapitalExpenditure: 1255000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1905070 Filing: 000119312526071593
The citation records this snapshot. The page link may show a newer release later.

Where revenue goes

How a period’s revenue divides into costs and what remains as profit. Items marked Derived are calculated by subtraction from reported figures.

2025 2025-01-01 – 2025-12-31

Revenue USD 21.05 million 100% of revenue
Operating costs Derived USD 177.05 million 841% of revenue
Operating income −USD 156.01 million −741% of revenue
Tax, interest and other Derived −USD 13.08 million −62% of revenue
Net income −USD 142.93 million −679% of revenue

Cash

Operating cash flow −USD 184.03 million −874% of revenue
Capital expenditure USD 41,000 0.2% of revenue
Free cash flow Derived −USD 184.07 million −875% of revenue

Share of revenue by period

Net income
Tax, interest and other
Operating costs

2016 Operating loss: operating costs were 3,738% of revenue.
2017 Operating loss: operating costs were 975% of revenue.
2018 Operating loss: operating costs were 307% of revenue.
2019 Operating loss: operating costs were 639% of revenue.
2020 Operating loss: operating costs were 1,025% of revenue.
2021 Operating loss: operating costs were 118% of revenue.
2022 Operating loss: operating costs were 203% of revenue.
2023 Operating loss: operating costs were 256% of revenue.
2024 Operating loss: operating costs were 244% of revenue.
2025 Operating loss: operating costs were 841% of revenue.

Values and sources

Revenue breakdown by annual reporting period
Period	Revenue	Operating costs	Operating income	Tax, interest and other	Net income	Free cash flow	Source
2016 2016-01-01 – 2016-12-31	416000	15548000 Derived	-15132000	-22000 Derived	-15110000	-15243000 Derived	Source 2016-01-01 – 2016-12-31: 416000 USD Inspect Revenue Open source 2016-01-01 – 2016-12-31: -15132000 USD Inspect Operating Income Open source 2016-01-01 – 2016-12-31: -15110000 USD Inspect Net Income Open source 2016-01-01 – 2016-12-31: -12993000 USD Inspect Operating Cash Flow Open source 2016-01-01 – 2016-12-31: 2250000 USD Inspect Capital Expenditure Open source
2017 2017-01-01 – 2017-12-31	3735000	36414000 Derived	-32679000	-199000 Derived	-32480000	-18572000 Derived	Source 2017-01-01 – 2017-12-31: 3735000 USD Inspect Revenue Open source 2017-01-01 – 2017-12-31: -32679000 USD Inspect Operating Income Open source 2017-01-01 – 2017-12-31: -32480000 USD Inspect Net Income Open source 2017-01-01 – 2017-12-31: -17771000 USD Inspect Operating Cash Flow Open source 2017-01-01 – 2017-12-31: 801000 USD Inspect Capital Expenditure Open source
2018 2018-01-01 – 2018-12-31	27677000	84965000 Derived	-57288000	-5040000 Derived	-52248000	125580000 Derived	Source 2018-01-01 – 2018-12-31: 27677000 USD Inspect Revenue Open source 2018-01-01 – 2018-12-31: -57288000 USD Inspect Operating Income Open source 2018-01-01 – 2018-12-31: -52248000 USD Inspect Net Income Open source 2018-01-01 – 2018-12-31: 127464000 USD Inspect Operating Cash Flow Open source 2018-01-01 – 2018-12-31: 1884000 USD Inspect Capital Expenditure Open source
2019 2019-01-01 – 2019-12-31	21219000	135623000 Derived	-114404000	-9019000 Derived	-105385000	-114573000 Derived	Source 2019-01-01 – 2019-12-31: 21219000 USD Inspect Revenue Open source 2019-01-01 – 2019-12-31: -114404000 USD Inspect Operating Income Open source 2019-01-01 – 2019-12-31: -105385000 USD Inspect Net Income Open source 2019-01-01 – 2019-12-31: -99308000 USD Inspect Operating Cash Flow Open source 2019-01-01 – 2019-12-31: 15265000 USD Inspect Capital Expenditure Open source
2020 2020-01-01 – 2020-12-31	21098000	216272000 Derived	-195174000	-4946000 Derived	-190228000	-171766000 Derived	Source 2020-01-01 – 2020-12-31: 21098000 USD Inspect Revenue Open source 2020-01-01 – 2020-12-31: -195174000 USD Inspect Operating Income Open source 2020-01-01 – 2020-12-31: -190228000 USD Inspect Net Income Open source 2020-01-01 – 2020-12-31: -166734000 USD Inspect Operating Cash Flow Open source 2020-01-01 – 2020-12-31: 5032000 USD Inspect Capital Expenditure Open source
2021 2021-01-01 – 2021-12-31	207085000	244445000 Derived	-37360000	-1031000 Derived	-36329000	295304000 Derived	Source 2021-01-01 – 2021-12-31: 207085000 USD Inspect Revenue Open source 2021-01-01 – 2021-12-31: -37360000 USD Inspect Operating Income Open source 2021-01-01 – 2021-12-31: -36329000 USD Inspect Net Income Open source 2021-01-01 – 2021-12-31: 298551000 USD Inspect Operating Cash Flow Open source 2021-01-01 – 2021-12-31: 3247000 USD Inspect Capital Expenditure Open source
2022 2022-01-01 – 2022-12-31	133600000	271434000 Derived	-137834000	-4524000 Derived	-133310000	-24446000 Derived	Source 2022-01-01 – 2022-12-31: 133600000 USD Inspect Revenue Open source 2022-01-01 – 2022-12-31: -137834000 USD Inspect Operating Income Open source 2022-01-01 – 2022-12-31: -133310000 USD Inspect Net Income Open source 2022-01-01 – 2022-12-31: -20329000 USD Inspect Operating Cash Flow Open source 2022-01-01 – 2022-12-31: 4117000 USD Inspect Capital Expenditure Open source
2023 2023-01-01 – 2023-12-31	97100000	248840000 Derived	-151740000	-21349000 Derived	-130391000	-186543000 Derived	Source 2023-01-01 – 2023-12-31: 97100000 USD Inspect Revenue Open source 2023-01-01 – 2023-12-31: -151740000 USD Inspect Operating Income Open source 2023-01-01 – 2023-12-31: -130391000 USD Inspect Net Income Open source 2023-01-01 – 2023-12-31: -184162000 USD Inspect Operating Cash Flow Open source 2023-01-01 – 2023-12-31: 2381000 USD Inspect Capital Expenditure Open source
2024 2024-01-01 – 2024-12-31	100558000	245555000 Derived	-144997000	-25948000 Derived	-119049000	-231160000 Derived	Source 2024-01-01 – 2024-12-31: 100558000 USD Inspect Revenue Open source 2024-01-01 – 2024-12-31: -144997000 USD Inspect Operating Income Open source 2024-01-01 – 2024-12-31: -119049000 USD Inspect Net Income Open source 2024-01-01 – 2024-12-31: -229905000 USD Inspect Operating Cash Flow Open source 2024-01-01 – 2024-12-31: 1255000 USD Inspect Capital Expenditure Open source
2025 2025-01-01 – 2025-12-31	21045000	177052000 Derived	-156007000	-13078000 Derived	-142929000	-184072000 Derived	Source 2025-01-01 – 2025-12-31: 21045000 USD Inspect Revenue Open source 2025-01-01 – 2025-12-31: -156007000 USD Inspect Operating Income Open source 2025-01-01 – 2025-12-31: -142929000 USD Inspect Net Income Open source 2025-01-01 – 2025-12-31: -184031000 USD Inspect Operating Cash Flow Open source 2025-01-01 – 2025-12-31: 41000 USD Inspect Capital Expenditure Open source

Amounts are exact, in USD.

Growth

Sales over time and how quickly they are changing.

Revenue

Revenue reported for each complete financial period.

USD 21M 2025

Values and sources

Revenue values and source evidence
Period	Series	Value(USD)	Source evidence
20162016-12-31	Revenue	416000	Revenue: 416000 Open source
20172017-12-31	Revenue	3735000	Revenue: 3735000 Open source
20182018-12-31	Revenue	27677000	Revenue: 27677000 Open source
20192019-12-31	Revenue	21219000	Revenue: 21219000 Open source
20202020-12-31	Revenue	21098000	Revenue: 21098000 Open source
20212021-12-31	Revenue	207085000	Revenue: 207085000 Open source
20222022-12-31	Revenue	133600000	Revenue: 133600000 Open source
20232023-12-31	Revenue	97100000	Revenue: 97100000 Open source
20242024-12-31	Revenue	100558000	Revenue: 100558000 Open source
20252025-12-31	Revenue	21045000	Revenue: 21045000 Open source

Revenue growth

Change in revenue from the same financial period one year earlier.

-79.1% 2025

Values and sources

Revenue growth values and source evidence
Period	Series	Value	Source evidence
20162016-12-31	Year over year	No prior comparable period	Revenue: 416000 Open source
20172017-12-31	Year over year	797.8%	Revenue: 3735000 Open source Revenue: 416000 Open source
20182018-12-31	Year over year	641%	Revenue: 27677000 Open source Revenue: 3735000 Open source
20192019-12-31	Year over year	-23.3%	Revenue: 21219000 Open source Revenue: 27677000 Open source
20202020-12-31	Year over year	-0.6%	Revenue: 21098000 Open source Revenue: 21219000 Open source
20212021-12-31	Year over year	881.5%	Revenue: 207085000 Open source Revenue: 21098000 Open source
20222022-12-31	Year over year	-35.5%	Revenue: 133600000 Open source Revenue: 207085000 Open source
20232023-12-31	Year over year	-27.3%	Revenue: 97100000 Open source Revenue: 133600000 Open source
20242024-12-31	Year over year	3.6%	Revenue: 100558000 Open source Revenue: 97100000 Open source
20252025-12-31	Year over year	-79.1%	Revenue: 21045000 Open source Revenue: 100558000 Open source

Profit and cash

How much revenue becomes profit, and how much cash operations generate.

Profit margins

Operating income, net income and free cash flow as a share of revenue.

Operating margin -741.3% 2025

Net margin -679.2% 2025

Free cash flow margin -874.7% 2025

Operating margin
Net margin
Free cash flow margin

Values and sources

Profit margins values and source evidence
Period	Series	Value	Source evidence
20162016-12-31	Operating margin	-3,637.5%	Operating Income: -15132000 Open source Revenue: 416000 Open source
20172017-12-31	Operating margin	-874.9%	Operating Income: -32679000 Open source Revenue: 3735000 Open source
20182018-12-31	Operating margin	-207%	Operating Income: -57288000 Open source Revenue: 27677000 Open source
20192019-12-31	Operating margin	-539.2%	Operating Income: -114404000 Open source Revenue: 21219000 Open source
20202020-12-31	Operating margin	-925.1%	Operating Income: -195174000 Open source Revenue: 21098000 Open source
20212021-12-31	Operating margin	-18%	Operating Income: -37360000 Open source Revenue: 207085000 Open source
20222022-12-31	Operating margin	-103.2%	Operating Income: -137834000 Open source Revenue: 133600000 Open source
20232023-12-31	Operating margin	-156.3%	Operating Income: -151740000 Open source Revenue: 97100000 Open source
20242024-12-31	Operating margin	-144.2%	Operating Income: -144997000 Open source Revenue: 100558000 Open source
20252025-12-31	Operating margin	-741.3%	Operating Income: -156007000 Open source Revenue: 21045000 Open source
20162016-12-31	Net margin	-3,632.2%	Net Income: -15110000 Open source Revenue: 416000 Open source
20172017-12-31	Net margin	-869.6%	Net Income: -32480000 Open source Revenue: 3735000 Open source
20182018-12-31	Net margin	-188.8%	Net Income: -52248000 Open source Revenue: 27677000 Open source
20192019-12-31	Net margin	-496.7%	Net Income: -105385000 Open source Revenue: 21219000 Open source
20202020-12-31	Net margin	-901.6%	Net Income: -190228000 Open source Revenue: 21098000 Open source
20212021-12-31	Net margin	-17.5%	Net Income: -36329000 Open source Revenue: 207085000 Open source
20222022-12-31	Net margin	-99.8%	Net Income: -133310000 Open source Revenue: 133600000 Open source
20232023-12-31	Net margin	-134.3%	Net Income: -130391000 Open source Revenue: 97100000 Open source
20242024-12-31	Net margin	-118.4%	Net Income: -119049000 Open source Revenue: 100558000 Open source
20252025-12-31	Net margin	-679.2%	Net Income: -142929000 Open source Revenue: 21045000 Open source
20162016-12-31	Free cash flow margin	-3,664.2%	Revenue: 416000 Open source Operating Cash Flow: -12993000 Open source Capital Expenditure: 2250000 Open source
20172017-12-31	Free cash flow margin	-497.2%	Revenue: 3735000 Open source Operating Cash Flow: -17771000 Open source Capital Expenditure: 801000 Open source
20182018-12-31	Free cash flow margin	453.7%	Revenue: 27677000 Open source Operating Cash Flow: 127464000 Open source Capital Expenditure: 1884000 Open source
20192019-12-31	Free cash flow margin	-540%	Revenue: 21219000 Open source Operating Cash Flow: -99308000 Open source Capital Expenditure: 15265000 Open source
20202020-12-31	Free cash flow margin	-814.1%	Revenue: 21098000 Open source Operating Cash Flow: -166734000 Open source Capital Expenditure: 5032000 Open source
20212021-12-31	Free cash flow margin	142.6%	Revenue: 207085000 Open source Operating Cash Flow: 298551000 Open source Capital Expenditure: 3247000 Open source
20222022-12-31	Free cash flow margin	-18.3%	Revenue: 133600000 Open source Operating Cash Flow: -20329000 Open source Capital Expenditure: 4117000 Open source
20232023-12-31	Free cash flow margin	-192.1%	Revenue: 97100000 Open source Operating Cash Flow: -184162000 Open source Capital Expenditure: 2381000 Open source
20242024-12-31	Free cash flow margin	-229.9%	Revenue: 100558000 Open source Operating Cash Flow: -229905000 Open source Capital Expenditure: 1255000 Open source
20252025-12-31	Free cash flow margin	-874.7%	Revenue: 21045000 Open source Operating Cash Flow: -184031000 Open source Capital Expenditure: 41000 Open source

Operating cash flow

Cash generated by the company’s normal business operations.

USD -184M 2025

Values and sources

Operating cash flow values and source evidence
Period	Series	Value(USD)	Source evidence
20162016-12-31	Operating cash flow	-12993000	Operating Cash Flow: -12993000 Open source
20172017-12-31	Operating cash flow	-17771000	Operating Cash Flow: -17771000 Open source
20182018-12-31	Operating cash flow	127464000	Operating Cash Flow: 127464000 Open source
20192019-12-31	Operating cash flow	-99308000	Operating Cash Flow: -99308000 Open source
20202020-12-31	Operating cash flow	-166734000	Operating Cash Flow: -166734000 Open source
20212021-12-31	Operating cash flow	298551000	Operating Cash Flow: 298551000 Open source
20222022-12-31	Operating cash flow	-20329000	Operating Cash Flow: -20329000 Open source
20232023-12-31	Operating cash flow	-184162000	Operating Cash Flow: -184162000 Open source
20242024-12-31	Operating cash flow	-229905000	Operating Cash Flow: -229905000 Open source
20252025-12-31	Operating cash flow	-184031000	Operating Cash Flow: -184031000 Open source

Free cash flow

Operating cash flow minus capital expenditure for the same period and unit.

USD -184.1M 2025

Values and sources

Free cash flow values and source evidence
Period	Series	Value(USD)	Source evidence
20162016-12-31	Free cash flow	-15243000	Operating Cash Flow: -12993000 Open source Capital Expenditure: 2250000 Open source
20172017-12-31	Free cash flow	-18572000	Operating Cash Flow: -17771000 Open source Capital Expenditure: 801000 Open source
20182018-12-31	Free cash flow	125580000	Operating Cash Flow: 127464000 Open source Capital Expenditure: 1884000 Open source
20192019-12-31	Free cash flow	-114573000	Operating Cash Flow: -99308000 Open source Capital Expenditure: 15265000 Open source
20202020-12-31	Free cash flow	-171766000	Operating Cash Flow: -166734000 Open source Capital Expenditure: 5032000 Open source
20212021-12-31	Free cash flow	295304000	Operating Cash Flow: 298551000 Open source Capital Expenditure: 3247000 Open source
20222022-12-31	Free cash flow	-24446000	Operating Cash Flow: -20329000 Open source Capital Expenditure: 4117000 Open source
20232023-12-31	Free cash flow	-186543000	Operating Cash Flow: -184162000 Open source Capital Expenditure: 2381000 Open source
20242024-12-31	Free cash flow	-231160000	Operating Cash Flow: -229905000 Open source Capital Expenditure: 1255000 Open source
20252025-12-31	Free cash flow	-184072000	Operating Cash Flow: -184031000 Open source Capital Expenditure: 41000 Open source

Balance sheet

Liabilities and short-term ability to meet obligations at each period end.

Liabilities to assets

Total liabilities as a share of total assets.

89.5% 2025

Values and sources

Liabilities to assets values and source evidence
Period	Series	Value	Source evidence
2016-12-31	Liabilities / assets	Not reported	No source recorded
20172017-12-31	Liabilities / assets	89.2%	Total Liabilities: 210608000 Open source Total Assets: 236060000 Open source
20182018-12-31	Liabilities / assets	63.3%	Total Liabilities: 195237000 Open source Total Assets: 308359000 Open source
20192019-12-31	Liabilities / assets	53.8%	Total Liabilities: 227170000 Open source Total Assets: 421913000 Open source
20202020-12-31	Liabilities / assets	45.2%	Total Liabilities: 220721000 Open source Total Assets: 488251000 Open source
20212021-12-31	Liabilities / assets	63.1%	Total Liabilities: 513934000 Open source Total Assets: 814658000 Open source
20222022-12-31	Liabilities / assets	72.8%	Total Liabilities: 573206000 Open source Total Assets: 787648000 Open source
20232023-12-31	Liabilities / assets	78.4%	Total Liabilities: 487669000 Open source Total Assets: 621827000 Open source
20242024-12-31	Liabilities / assets	72.9%	Total Liabilities: 341503000 Open source Total Assets: 468303000 Open source
20252025-12-31	Liabilities / assets	89.5%	Total Liabilities: 262588000 Open source Total Assets: 293237000 Open source

Current assets to current liabilities

Current assets divided by current liabilities.

3.83× 2025

Values and sources

Current assets to current liabilities values and source evidence
Period	Series	Value	Source evidence
2016-12-31	Current assets / current liabilities	Not reported	No source recorded
20172017-12-31	Current assets / current liabilities	8.5×	Current Assets: 232974000 Open source Current Liabilities: 27403000 Open source
20182018-12-31	Current assets / current liabilities	6.11×	Current Assets: 293176000 Open source Current Liabilities: 47948000 Open source
20192019-12-31	Current assets / current liabilities	5.77×	Current Assets: 357437000 Open source Current Liabilities: 61970000 Open source
20202020-12-31	Current assets / current liabilities	6.19×	Current Assets: 421511000 Open source Current Liabilities: 68088000 Open source
20212021-12-31	Current assets / current liabilities	5.37×	Current Assets: 749713000 Open source Current Liabilities: 139555000 Open source
20222022-12-31	Current assets / current liabilities	7.74×	Current Assets: 726435000 Open source Current Liabilities: 93809000 Open source
20232023-12-31	Current assets / current liabilities	3.18×	Current Assets: 565807000 Open source Current Liabilities: 177948000 Open source
20242024-12-31	Current assets / current liabilities	3.4×	Current Assets: 424817000 Open source Current Liabilities: 125059000 Open source
20252025-12-31	Current assets / current liabilities	3.83×	Current Assets: 266452000 Open source Current Liabilities: 69503000 Open source

Cash generation

Compare reported profit with operating cash and capital spending. Free cash flow is calculated as operating cash flow minus capital expenditure when both exact, consolidated amounts match the same period and unit.

Cash generation by annual reporting period
Period	Net income	Operating cash flow	Capital expenditure	Free cash flow
2016 2016-01-01 – 2016-12-31	−USD 15.11 million Exact value Exact value: -15110000 USD 2016-01-01 – 2016-12-31: -15110000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2016-12-31 Alector, Inc. (edgar:1653087) Net Income: -15110000 USD Concept: fundies:NetIncome Period: 2016-01-01 to 2016-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2016-12-31&surface=latest&period_type=duration&start=2016-01-01&unit=USD&dimensions= Input fundies:NetIncome: -15110000 USD (2016-01-01 to 2016-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312520015336/alec-20190930.xml#1044350 Filing: 000119312520015336 The citation records this snapshot. The page link may show a newer release later.	−USD 12.99 million Exact value Exact value: -12993000 USD 2016-01-01 – 2016-12-31: -12993000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2016-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -12993000 USD Concept: fundies:OperatingCashFlow Period: 2016-01-01 to 2016-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2016-12-31&surface=latest&period_type=duration&start=2016-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -12993000 USD (2016-01-01 to 2016-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312520015336/alec-20190930.xml#1046507 Filing: 000119312520015336 The citation records this snapshot. The page link may show a newer release later.	USD 2.25 million Exact value Exact value: 2250000 USD 2016-01-01 – 2016-12-31: 2250000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2016-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 2250000 USD Concept: fundies:CapitalExpenditure Period: 2016-01-01 to 2016-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2016-12-31&surface=latest&period_type=duration&start=2016-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 2250000 USD (2016-01-01 to 2016-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312520015336/alec-20190930.xml#1045679 Filing: 000119312520015336 The citation records this snapshot. The page link may show a newer release later.	−USD 15.24 million Calculation and evidence -12993000 − 2250000 USD Exact free cash flow: -15243000 USD 2016-01-01 – 2016-12-31: -12993000 USD · Inspect Operating Cash Flow · Source 2016-01-01 – 2016-12-31: 2250000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2016-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -15243000 USD Concept: free-cash-flow Period: 2016-01-01 to 2016-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -12993000 USD (2016-01-01 to 2016-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312520015336/alec-20190930.xml#1046507 Filing: 000119312520015336 Input fundies:CapitalExpenditure: 2250000 USD (2016-01-01 to 2016-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312520015336/alec-20190930.xml#1045679 Filing: 000119312520015336 The citation records this snapshot. The page link may show a newer release later.
2017 2017-01-01 – 2017-12-31	−USD 32.48 million Exact value Exact value: -32480000 USD 2017-01-01 – 2017-12-31: -32480000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2017-12-31 Alector, Inc. (edgar:1653087) Net Income: -32480000 USD Concept: fundies:NetIncome Period: 2017-01-01 to 2017-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2017-12-31&surface=latest&period_type=duration&start=2017-01-01&unit=USD&dimensions= Input fundies:NetIncome: -32480000 USD (2017-01-01 to 2017-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459020012520/alec-20191231.xml#117496 Filing: 000156459020012520 The citation records this snapshot. The page link may show a newer release later.	−USD 17.77 million Exact value Exact value: -17771000 USD 2017-01-01 – 2017-12-31: -17771000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2017-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -17771000 USD Concept: fundies:OperatingCashFlow Period: 2017-01-01 to 2017-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2017-12-31&surface=latest&period_type=duration&start=2017-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -17771000 USD (2017-01-01 to 2017-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459020012520/alec-20191231.xml#146237 Filing: 000156459020012520 The citation records this snapshot. The page link may show a newer release later.	USD 801,000 Exact value Exact value: 801000 USD 2017-01-01 – 2017-12-31: 801000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2017-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 801000 USD Concept: fundies:CapitalExpenditure Period: 2017-01-01 to 2017-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2017-12-31&surface=latest&period_type=duration&start=2017-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 801000 USD (2017-01-01 to 2017-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459020012520/alec-20191231.xml#146870 Filing: 000156459020012520 The citation records this snapshot. The page link may show a newer release later.	−USD 18.57 million Calculation and evidence -17771000 − 801000 USD Exact free cash flow: -18572000 USD 2017-01-01 – 2017-12-31: -17771000 USD · Inspect Operating Cash Flow · Source 2017-01-01 – 2017-12-31: 801000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2017-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -18572000 USD Concept: free-cash-flow Period: 2017-01-01 to 2017-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -17771000 USD (2017-01-01 to 2017-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459020012520/alec-20191231.xml#146237 Filing: 000156459020012520 Input fundies:CapitalExpenditure: 801000 USD (2017-01-01 to 2017-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459020012520/alec-20191231.xml#146870 Filing: 000156459020012520 The citation records this snapshot. The page link may show a newer release later.
2018 2018-01-01 – 2018-12-31	−USD 52.25 million Exact value Exact value: -52248000 USD 2018-01-01 – 2018-12-31: -52248000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2018-12-31 Alector, Inc. (edgar:1653087) Net Income: -52248000 USD Concept: fundies:NetIncome Period: 2018-01-01 to 2018-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2018-12-31&surface=latest&period_type=duration&start=2018-01-01&unit=USD&dimensions= Input fundies:NetIncome: -52248000 USD (2018-01-01 to 2018-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459021008860/alec-20201231.xml#104382 Filing: 000156459021008860 The citation records this snapshot. The page link may show a newer release later.	USD 127.46 million Exact value Exact value: 127464000 USD 2018-01-01 – 2018-12-31: 127464000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2018-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: 127464000 USD Concept: fundies:OperatingCashFlow Period: 2018-01-01 to 2018-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2018-12-31&surface=latest&period_type=duration&start=2018-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: 127464000 USD (2018-01-01 to 2018-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459021008860/alec-20201231.xml#135155 Filing: 000156459021008860 The citation records this snapshot. The page link may show a newer release later.	USD 1.88 million Exact value Exact value: 1884000 USD 2018-01-01 – 2018-12-31: 1884000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2018-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 1884000 USD Concept: fundies:CapitalExpenditure Period: 2018-01-01 to 2018-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2018-12-31&surface=latest&period_type=duration&start=2018-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 1884000 USD (2018-01-01 to 2018-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459021008860/alec-20201231.xml#135788 Filing: 000156459021008860 The citation records this snapshot. The page link may show a newer release later.	USD 125.58 million Calculation and evidence 127464000 − 1884000 USD Exact free cash flow: 125580000 USD 2018-01-01 – 2018-12-31: 127464000 USD · Inspect Operating Cash Flow · Source 2018-01-01 – 2018-12-31: 1884000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2018-12-31 Alector, Inc. (edgar:1653087) Free cash flow: 125580000 USD Concept: free-cash-flow Period: 2018-01-01 to 2018-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: 127464000 USD (2018-01-01 to 2018-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459021008860/alec-20201231.xml#135155 Filing: 000156459021008860 Input fundies:CapitalExpenditure: 1884000 USD (2018-01-01 to 2018-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000156459021008860/alec-20201231.xml#135788 Filing: 000156459021008860 The citation records this snapshot. The page link may show a newer release later.
2019 2019-01-01 – 2019-12-31	−USD 105.39 million Exact value Exact value: -105385000 USD 2019-01-01 – 2019-12-31: -105385000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2019-12-31 Alector, Inc. (edgar:1653087) Net Income: -105385000 USD Concept: fundies:NetIncome Period: 2019-01-01 to 2019-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2019-12-31&surface=latest&period_type=duration&start=2019-01-01&unit=USD&dimensions= Input fundies:NetIncome: -105385000 USD (2019-01-01 to 2019-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017022001979/alec-20211231.htm#1991939 Filing: 000095017022001979 The citation records this snapshot. The page link may show a newer release later.	−USD 99.31 million Exact value Exact value: -99308000 USD 2019-01-01 – 2019-12-31: -99308000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2019-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -99308000 USD Concept: fundies:OperatingCashFlow Period: 2019-01-01 to 2019-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2019-12-31&surface=latest&period_type=duration&start=2019-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -99308000 USD (2019-01-01 to 2019-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017022001979/alec-20211231.htm#2343306 Filing: 000095017022001979 The citation records this snapshot. The page link may show a newer release later.	USD 15.27 million Exact value Exact value: 15265000 USD 2019-01-01 – 2019-12-31: 15265000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2019-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 15265000 USD Concept: fundies:CapitalExpenditure Period: 2019-01-01 to 2019-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2019-12-31&surface=latest&period_type=duration&start=2019-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 15265000 USD (2019-01-01 to 2019-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017022001979/alec-20211231.htm#2353580 Filing: 000095017022001979 The citation records this snapshot. The page link may show a newer release later.	−USD 114.57 million Calculation and evidence -99308000 − 15265000 USD Exact free cash flow: -114573000 USD 2019-01-01 – 2019-12-31: -99308000 USD · Inspect Operating Cash Flow · Source 2019-01-01 – 2019-12-31: 15265000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2019-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -114573000 USD Concept: free-cash-flow Period: 2019-01-01 to 2019-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -99308000 USD (2019-01-01 to 2019-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017022001979/alec-20211231.htm#2343306 Filing: 000095017022001979 Input fundies:CapitalExpenditure: 15265000 USD (2019-01-01 to 2019-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017022001979/alec-20211231.htm#2353580 Filing: 000095017022001979 The citation records this snapshot. The page link may show a newer release later.
2020 2020-01-01 – 2020-12-31	−USD 190.23 million Exact value Exact value: -190228000 USD 2020-01-01 – 2020-12-31: -190228000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2020-12-31 Alector, Inc. (edgar:1653087) Net Income: -190228000 USD Concept: fundies:NetIncome Period: 2020-01-01 to 2020-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2020-12-31&surface=latest&period_type=duration&start=2020-01-01&unit=USD&dimensions= Input fundies:NetIncome: -190228000 USD (2020-01-01 to 2020-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017023005111/alec-20221231.htm#1984790 Filing: 000095017023005111 The citation records this snapshot. The page link may show a newer release later.	−USD 166.73 million Exact value Exact value: -166734000 USD 2020-01-01 – 2020-12-31: -166734000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2020-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -166734000 USD Concept: fundies:OperatingCashFlow Period: 2020-01-01 to 2020-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2020-12-31&surface=latest&period_type=duration&start=2020-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -166734000 USD (2020-01-01 to 2020-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017023005111/alec-20221231.htm#2312381 Filing: 000095017023005111 The citation records this snapshot. The page link may show a newer release later.	USD 5.03 million Exact value Exact value: 5032000 USD 2020-01-01 – 2020-12-31: 5032000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2020-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 5032000 USD Concept: fundies:CapitalExpenditure Period: 2020-01-01 to 2020-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2020-12-31&surface=latest&period_type=duration&start=2020-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 5032000 USD (2020-01-01 to 2020-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017023005111/alec-20221231.htm#2323791 Filing: 000095017023005111 The citation records this snapshot. The page link may show a newer release later.	−USD 171.77 million Calculation and evidence -166734000 − 5032000 USD Exact free cash flow: -171766000 USD 2020-01-01 – 2020-12-31: -166734000 USD · Inspect Operating Cash Flow · Source 2020-01-01 – 2020-12-31: 5032000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2020-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -171766000 USD Concept: free-cash-flow Period: 2020-01-01 to 2020-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -166734000 USD (2020-01-01 to 2020-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017023005111/alec-20221231.htm#2312381 Filing: 000095017023005111 Input fundies:CapitalExpenditure: 5032000 USD (2020-01-01 to 2020-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017023005111/alec-20221231.htm#2323791 Filing: 000095017023005111 The citation records this snapshot. The page link may show a newer release later.
2021 2021-01-01 – 2021-12-31	−USD 36.33 million Exact value Exact value: -36329000 USD 2021-01-01 – 2021-12-31: -36329000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2021-12-31 Alector, Inc. (edgar:1653087) Net Income: -36329000 USD Concept: fundies:NetIncome Period: 2021-01-01 to 2021-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2021-12-31&surface=latest&period_type=duration&start=2021-01-01&unit=USD&dimensions= Input fundies:NetIncome: -36329000 USD (2021-01-01 to 2021-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017024021183/alec-20231231.htm#1559345 Filing: 000095017024021183 The citation records this snapshot. The page link may show a newer release later.	USD 298.55 million Exact value Exact value: 298551000 USD 2021-01-01 – 2021-12-31: 298551000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2021-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: 298551000 USD Concept: fundies:OperatingCashFlow Period: 2021-01-01 to 2021-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2021-12-31&surface=latest&period_type=duration&start=2021-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: 298551000 USD (2021-01-01 to 2021-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017024021183/alec-20231231.htm#1755395 Filing: 000095017024021183 The citation records this snapshot. The page link may show a newer release later.	USD 3.25 million Exact value Exact value: 3247000 USD 2021-01-01 – 2021-12-31: 3247000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2021-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 3247000 USD Concept: fundies:CapitalExpenditure Period: 2021-01-01 to 2021-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2021-12-31&surface=latest&period_type=duration&start=2021-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 3247000 USD (2021-01-01 to 2021-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017024021183/alec-20231231.htm#1762235 Filing: 000095017024021183 The citation records this snapshot. The page link may show a newer release later.	USD 295.3 million Calculation and evidence 298551000 − 3247000 USD Exact free cash flow: 295304000 USD 2021-01-01 – 2021-12-31: 298551000 USD · Inspect Operating Cash Flow · Source 2021-01-01 – 2021-12-31: 3247000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2021-12-31 Alector, Inc. (edgar:1653087) Free cash flow: 295304000 USD Concept: free-cash-flow Period: 2021-01-01 to 2021-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: 298551000 USD (2021-01-01 to 2021-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017024021183/alec-20231231.htm#1755395 Filing: 000095017024021183 Input fundies:CapitalExpenditure: 3247000 USD (2021-01-01 to 2021-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017024021183/alec-20231231.htm#1762235 Filing: 000095017024021183 The citation records this snapshot. The page link may show a newer release later.
2022 2022-01-01 – 2022-12-31	−USD 133.31 million Exact value Exact value: -133310000 USD 2022-01-01 – 2022-12-31: -133310000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2022-12-31 Alector, Inc. (edgar:1653087) Net Income: -133310000 USD Concept: fundies:NetIncome Period: 2022-01-01 to 2022-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2022-12-31&surface=latest&period_type=duration&start=2022-01-01&unit=USD&dimensions= Input fundies:NetIncome: -133310000 USD (2022-01-01 to 2022-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#1777347 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.	−USD 20.33 million Exact value Exact value: -20329000 USD 2022-01-01 – 2022-12-31: -20329000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2022-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -20329000 USD Concept: fundies:OperatingCashFlow Period: 2022-01-01 to 2022-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2022-12-31&surface=latest&period_type=duration&start=2022-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -20329000 USD (2022-01-01 to 2022-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2034115 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.	USD 4.12 million Exact value Exact value: 4117000 USD 2022-01-01 – 2022-12-31: 4117000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2022-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 4117000 USD Concept: fundies:CapitalExpenditure Period: 2022-01-01 to 2022-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2022-12-31&surface=latest&period_type=duration&start=2022-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 4117000 USD (2022-01-01 to 2022-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2042636 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.	−USD 24.45 million Calculation and evidence -20329000 − 4117000 USD Exact free cash flow: -24446000 USD 2022-01-01 – 2022-12-31: -20329000 USD · Inspect Operating Cash Flow · Source 2022-01-01 – 2022-12-31: 4117000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2022-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -24446000 USD Concept: free-cash-flow Period: 2022-01-01 to 2022-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -20329000 USD (2022-01-01 to 2022-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2034115 Filing: 000095017025027758 Input fundies:CapitalExpenditure: 4117000 USD (2022-01-01 to 2022-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2042636 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.
2023 2023-01-01 – 2023-12-31	−USD 130.39 million Exact value Exact value: -130391000 USD 2023-01-01 – 2023-12-31: -130391000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2023-12-31 Alector, Inc. (edgar:1653087) Net Income: -130391000 USD Concept: fundies:NetIncome Period: 2023-01-01 to 2023-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2023-12-31&surface=latest&period_type=duration&start=2023-01-01&unit=USD&dimensions= Input fundies:NetIncome: -130391000 USD (2023-01-01 to 2023-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#1844236 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.	−USD 184.16 million Exact value Exact value: -184162000 USD 2023-01-01 – 2023-12-31: -184162000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2023-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -184162000 USD Concept: fundies:OperatingCashFlow Period: 2023-01-01 to 2023-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2023-12-31&surface=latest&period_type=duration&start=2023-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -184162000 USD (2023-01-01 to 2023-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2032373 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.	USD 2.38 million Exact value Exact value: 2381000 USD 2023-01-01 – 2023-12-31: 2381000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2023-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 2381000 USD Concept: fundies:CapitalExpenditure Period: 2023-01-01 to 2023-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2023-12-31&surface=latest&period_type=duration&start=2023-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 2381000 USD (2023-01-01 to 2023-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2041043 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.	−USD 186.54 million Calculation and evidence -184162000 − 2381000 USD Exact free cash flow: -186543000 USD 2023-01-01 – 2023-12-31: -184162000 USD · Inspect Operating Cash Flow · Source 2023-01-01 – 2023-12-31: 2381000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2023-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -186543000 USD Concept: free-cash-flow Period: 2023-01-01 to 2023-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -184162000 USD (2023-01-01 to 2023-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2032373 Filing: 000095017025027758 Input fundies:CapitalExpenditure: 2381000 USD (2023-01-01 to 2023-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000095017025027758/alec-20241231.htm#2041043 Filing: 000095017025027758 The citation records this snapshot. The page link may show a newer release later.
2024 2024-01-01 – 2024-12-31	−USD 119.05 million Exact value Exact value: -119049000 USD 2024-01-01 – 2024-12-31: -119049000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2024-12-31 Alector, Inc. (edgar:1653087) Net Income: -119049000 USD Concept: fundies:NetIncome Period: 2024-01-01 to 2024-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2024-12-31&surface=latest&period_type=duration&start=2024-01-01&unit=USD&dimensions= Input fundies:NetIncome: -119049000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1722524 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.	−USD 229.91 million Exact value Exact value: -229905000 USD 2024-01-01 – 2024-12-31: -229905000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2024-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -229905000 USD Concept: fundies:OperatingCashFlow Period: 2024-01-01 to 2024-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2024-12-31&surface=latest&period_type=duration&start=2024-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -229905000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1898226 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.	USD 1.26 million Exact value Exact value: 1255000 USD 2024-01-01 – 2024-12-31: 1255000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2024-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 1255000 USD Concept: fundies:CapitalExpenditure Period: 2024-01-01 to 2024-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2024-12-31&surface=latest&period_type=duration&start=2024-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 1255000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1905070 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.	−USD 231.16 million Calculation and evidence -229905000 − 1255000 USD Exact free cash flow: -231160000 USD 2024-01-01 – 2024-12-31: -229905000 USD · Inspect Operating Cash Flow · Source 2024-01-01 – 2024-12-31: 1255000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2024-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -231160000 USD Concept: free-cash-flow Period: 2024-01-01 to 2024-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -229905000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1898226 Filing: 000119312526071593 Input fundies:CapitalExpenditure: 1255000 USD (2024-01-01 to 2024-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1905070 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.
2025 2025-01-01 – 2025-12-31	−USD 142.93 million Exact value Exact value: -142929000 USD 2025-01-01 – 2025-12-31: -142929000 USD Inspect Net Income Open source Share or cite Citation for Net Income · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Net Income: -142929000 USD Concept: fundies:NetIncome Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ANetIncome&period=2025-12-31&surface=latest&period_type=duration&start=2025-01-01&unit=USD&dimensions= Input fundies:NetIncome: -142929000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1800562 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.	−USD 184.03 million Exact value Exact value: -184031000 USD 2025-01-01 – 2025-12-31: -184031000 USD Inspect Operating Cash Flow Open source Share or cite Citation for Operating Cash Flow · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Operating Cash Flow: -184031000 USD Concept: fundies:OperatingCashFlow Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3AOperatingCashFlow&period=2025-12-31&surface=latest&period_type=duration&start=2025-01-01&unit=USD&dimensions= Input fundies:OperatingCashFlow: -184031000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1896268 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.	USD 41,000 Exact value Exact value: 41000 USD 2025-01-01 – 2025-12-31: 41000 USD Inspect Capital Expenditure Open source Share or cite Citation for Capital Expenditure · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Capital Expenditure: 41000 USD Concept: fundies:CapitalExpenditure Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087/explain?concept=fundies%3ACapitalExpenditure&period=2025-12-31&surface=latest&period_type=duration&start=2025-01-01&unit=USD&dimensions= Input fundies:CapitalExpenditure: 41000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1903264 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.	−USD 184.07 million Calculation and evidence -184031000 − 41000 USD Exact free cash flow: -184072000 USD 2025-01-01 – 2025-12-31: -184031000 USD · Inspect Operating Cash Flow · Source 2025-01-01 – 2025-12-31: 41000 USD · Inspect Capital Expenditure · Source Share or cite Citation for Free cash flow · Alector, Inc. · 2025-12-31 Alector, Inc. (edgar:1653087) Free cash flow: -184072000 USD Concept: free-cash-flow Period: 2025-01-01 to 2025-12-31 Values: Latest reported Published: 2026-11-02T17:15:30Z Snapshot: 8584cf069903416cc41881e8af308f4ab433f886df7f9fc24a8aea8744c83009 Dimensions: Consolidated View: https://fundies.io/companies/edgar/1653087?view=overview&cadence=annual&surface=latest#cash-generation-title Computed: Operating cash flow minus capital expenditure Input fundies:OperatingCashFlow: -184031000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1896268 Filing: 000119312526071593 Input fundies:CapitalExpenditure: 41000 USD (2025-01-01 to 2025-12-31) Dimensions: Consolidated Source: https://www.sec.gov/Archives/edgar/data/1653087/000119312526071593/alec-20251231.htm#1903264 Filing: 000119312526071593 The citation records this snapshot. The page link may show a newer release later.

Capital expenditure uses the canonical mapped positive-spending convention. A missing, ambiguous, incompatible, or negative-sign input is left blank. Values use the latest reported version.

Dataset coverage and company identifiers

Coverage reflects filings processed into this Fundies dataset; it does not imply every source filing is loaded.

68 filings · 2,251 latest values · 2,251 originally reported values

Dataset published 2026-11-02. Source filing dates and reporting periods are shown separately.

Identifiers: 0001653087, 1653087, ALEC, edgar:1653087

Also known as Alector LLC, Alector, Inc.

Alector, Inc.

Latest quarter

Revenue

Operating margin

Operating cash flow

Free cash flow

Reported share-count change

Trailing twelve months

Revenue

Net income

Operating cash flow

Capital expenditure

Free cash flow

Company performance

What changed year over year

Revenue

Net income

Operating cash flow

Capital expenditure

Where revenue goes

2025 2025-01-01 – 2025-12-31

Cash

Share of revenue by period

Growth

Profit and cash

Balance sheet

Cash generation