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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Oct 16, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Oct 14, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Oct 5, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record58922 flagged findings
Reported transactions (Form 4)80since Jul 1, 2025 · and 12 other holdings
Corporate events (8-K)30since Jul 7, 2021
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-05-07share offering or dilution eventrecentOpen filing ↗“…common stock, par value $0.0001 per share (the “ Common Stock ”), in such share amounts as the Company may specify by notice to TD…”
- 2026-05-07share offering or dilution eventrecentOpen filing ↗“…offering 159,663,319 shares, assuming the sale of $125,000,000 of shares of our common stock in this offering at a price of $2.57…”
- 2026-05-07capital return (buybacks/dividends)recentOpen filing ↗“…fund or analogous provisions or at the option of a holder of debt securities and the period or periods within which, the price or…”
+1 more passage from the same document
- “…price or prices at which and the terms and conditions upon which securities of the series shall be redeemed or purchased, in whole or…”
- 2026-05-07share offering or dilution eventrecentOpen filing ↗“…5 Alector, Inc. Notes to Conde nsed Consolidated Financial Statements (Unaudited) 1. The Company and Liquidity Alector, Inc.…”
+1 more passage from the same document
- “…1. The Company and Liquidity Alector, Inc. (Alector or the Company) is a Delaware corporation headquartered in South San…”
- 2026-05-07listing compliance noticerecentOpen filing ↗“…to comply with the continued listing requirements of the Nasdaq Stock Market, it could result in our common stock being delisted,…”
+1 more passage from the same document
- “…of the Nasdaq Stock Market, it could result in our common stock being delisted, which could adversely affect the market price…”
- 2026-05-07regulatory investigationrecentOpen filing ↗“…• suspend or withdraw regulatory approvals; • suspend any of our ongoing clinical trials; • refuse to approve pending…”
+1 more passage from the same document
- “…EMA, or comparable foreign regulatory authorities may significantly change in a manner rendering our clinical data insufficient for…”
- 2026-05-07Department of Justice inquiryrecentOpen filing ↗“…report certain adverse reactions and production problems, if any, to the FDA, EMA, and comparable foreign regulatory authorities. Any…”
+1 more passage from the same document
- “…in many other countries, the healthcare providers who engage in our clinical trials or prescribe pharmaceuticals are employed by…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 589)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Oct 16, 26424B5 ↗Securities offering new
- Oct 16, 268-K ↗Current report · Entered a material agreement new
- Oct 14, 268-K ↗Current report · A senior executive left or was appointed new
- Oct 5, 268-K ↗Current report · Entered a material agreement
- Sep 18, 26SCHEDULE 13G ↗Passive stake · BVF PARTNERS L P/IL · 8.4% · event on Sep 11, 26
- Sep 4, 26Form 144 ↗Notice of proposed sale
Notice of proposed sale · 4 Form 144 filingsshow all 4hide
- Sep 2, 26Form 144 ↗Notice of proposed sale
- Sep 1, 26Form 144 ↗Notice of proposed sale
- Sep 1, 26Form 144 ↗Notice of proposed sale
- Sep 1, 26Form 144 ↗Notice of proposed sale
- Aug 21, 26Form 4 ↗Insider transaction
- Aug 6, 2610-Q ↗Quarterly report
- Aug 6, 268-K ↗Current report · Results
- Jul 9, 26Form 4 ↗Insider transaction
- Jul 8, 268-K ↗Current report · A material agreement was terminated
- Jun 17, 268-K ↗Current report · Shareholder vote results
589 filings on record, the oldest from Nov 7, 18.
Listing the 25 most recent filings of the 589 on record.
41125
- Oct 16, 26Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Oct 14, 26A senior executive left or was appointed8-K 5.02 ↗
- Oct 5, 26Entered a material agreement+4 more in the same filing8-K 1.01 ↗
- Jul 8, 26A material agreement was terminated8-K 1.02 ↗
- May 7, 26Entered a material agreement+1 more in the same filing8-K 1.01 ↗
- Dec 12, 25A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Oct 21, 25Restructuring plan with committed costs+4 more in the same filing8-K 2.05 ↗
- Jun 13, 25A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Mar 28, 25A senior executive left or was appointed8-K 5.02 ↗
- Mar 10, 25Restructuring plan with committed costs8-K 2.05 ↗
- Nov 25, 24Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
- Nov 14, 24Entered a material agreement+3 more in the same filing8-K 1.01 ↗
16 older filings not shown · The record reaches back to Mar 26, 19.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Mar 29, 23Restructuring plan with committed costs8-K 2.05 ↗
The full record holds 4 stress filings.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- Chen Yu9.2%Oct 22, 25SCHEDULE 13G ↗5 co-filers on this document — the figure is the largest single stake, not their sum.
- BVF PARTNERS L P/IL8.4%Sep 11, 26SCHEDULE 13G ↗10 co-filers on this document — the figure is the largest single stake, not their sum.
- Arnon Rosenthal7.4%Dec 31, 25SCHEDULE 13G/A ↗
- RTW Investments, LP6.9%Sep 30, 25SCHEDULE 13G ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
- The Vanguard Group6.3%Dec 31, 25SCHEDULE 13G/A ↗
show 3 more holdershide
- BlackRock, Inc.5.2%Mar 31, 26SCHEDULE 13G ↗3 earlier filings
- Terrance G. McGuire4.7%Mar 31, 26SCHEDULE 13G/A ↗11 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
- FMR LLC3.6%Oct 31, 25SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
Sale intention announced
On Sep 4, GRACE WONG-SARAD filed notice of intent to sell up to $9K. It is filed under a scheduled plan (10b5-1), arranged in advance.
A notice is not a sale: it may not go ahead, may happen in part, or at a different price.
After the notice, they sold $9K on Sep 4, per their Form 4. That is 100% of the shares announced so far, and the window is still open.
View notice (Form 144) ↗+4 more recent notices · 3 with a later sale
- Sep 4, 26Sell$9KGrace Wong-SaradPrincipal Accounting Officer↗
- Sep 3, 26Sell$78KNeil Lindsay BerkleyCFO & Chief Business Officer↗
- Sep 3, 26Sell$193KArnon RosenthalChief Executive Officer↗
- Sep 3, 26Sell$14KGrace Wong-SaradPrincipal Accounting Officer↗
- Sep 2, 26Sell$2KGrace Wong-SaradPrincipal Accounting Officer↗
- Jun 3, 26Sell$7KGrace Wong-SaradPrincipal Accounting Officer↗
- Jun 2, 26Sell$38KNeil Lindsay BerkleyCFO & Chief Business Officer↗
- Jun 2, 26Sell$11KGrace Wong-SaradPrincipal Accounting Officer↗
- Jun 2, 26Sell$172KArnon RosenthalChief Executive Officer↗
- Apr 16, 26Sell$5KGrace Wong-SaradPrincipal Accounting Officer↗
- Mar 10, 26Sell$3KGrace Wong-SaradPrincipal Accounting Officer↗
- Mar 3, 26Sell$7KGrace Wong-SaradPrincipal Accounting Officer↗
There are 9 more transactions in this stretch.
Stock compensation, tax and giftsshow the 19 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Oct 14, 26Compensationamount n/aGrace Wong-SaradPrincipal Accounting Officer↗
- Oct 14, 26Compensationamount n/aNeil Lindsay BerkleyCFO & Chief Business Officer↗
- Oct 14, 26Compensationamount n/aArnon RosenthalChief Executive Officer↗
- Aug 19, 26Giftamount n/aArnon RosenthalChief Executive Officer↗
- Aug 19, 26Giftamount n/aArnon RosenthalChief Executive Officer↗
- Jul 9, 26Compensationamount n/aGrace Wong-SaradPrincipal Accounting Officer↗
- Jun 17, 26Compensationamount n/aLOUIS J LAVIGNE JR↗
- Jun 17, 26Compensationamount n/aERROL B DESOUZA↗
- Jun 17, 26Compensationamount n/aMark Altmeyer↗
- Jun 17, 26Compensationamount n/aRICHARD H SCHELLER↗
- Jun 17, 26Compensationamount n/aPaula Hammond↗
- Jun 17, 26Compensationamount n/aELIZABETH A. GAROFALO↗
- Jun 17, 26Compensationamount n/aKristine Yaffe↗
- Jun 1, 26Compensationamount n/aRICHARD H SCHELLER↗
- Mar 15, 26Compensationamount n/aNeil Lindsay BerkleyCFO & Chief Business Officer↗
- Mar 13, 26Compensationamount n/aArnon RosenthalChief Executive Officer↗
- Nov 10, 25Compensationamount n/aArnon RosenthalChief Executive Officer↗
- Nov 10, 25Compensationamount n/aGrace Wong-SaradPrincipal Accounting Officer↗
- Nov 10, 25Compensationamount n/aNeil Lindsay BerkleyChief Bus Ofcr & Interim CFO↗
The full record holds 145 transactions and goes back to Sep 10, 21.
Its sector and its market
Alector Inc. among Health Care companies
The profile shows what is on record. Context and Radar place the company among those of its sector and region.
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- 589 documents on file, from Nov 7, 2018 to Oct 16, 2026.
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Which SEC documents appear here?
Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
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