Alector, Inc.

NasdaqGS:ALEC Stock Report

Market Cap: US$219.4m

Alector Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:ALEC Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
03 Dec 25SellUS$46,673Saraswati Kenkare-MitraIndividual41,687US$1.12
03 Dec 25SellUS$116,827Arnon RosenthalIndividual104,347US$1.12
03 Dec 25SellUS$9,019Grace Wong-SaradIndividual8,056US$1.12
03 Dec 25SellUS$41,717Neil BerkleyIndividual37,261US$1.12
02 Sep 25SellUS$128,740Arnon RosenthalIndividual51,562US$2.50
02 Sep 25SellUS$59,019Saraswati Kenkare-MitraIndividual23,638US$2.50
02 Sep 25SellUS$39,554Neil BerkleyIndividual15,842US$2.50
02 Sep 25SellUS$14,756Grace Wong-SaradIndividual5,910US$2.50
20 Jun 25SellUS$1,440Kristine YaffeIndividual1,000US$1.44
02 Jun 25SellUS$69,713Arnon RosenthalIndividual52,087US$1.34
02 Jun 25SellUS$31,974Saraswati Kenkare-MitraIndividual23,890US$1.34
02 Jun 25SellUS$22,068Marc GrassoIndividual16,488US$1.34
03 Mar 25SellUS$23,927Gary RomanoIndividual16,306US$1.47
03 Mar 25SellUS$26,547Marc GrassoIndividual18,091US$1.47
03 Mar 25SellUS$42,662Saraswati Kenkare-MitraIndividual29,073US$1.47
03 Mar 25SellUS$59,176Arnon RosenthalIndividual40,330US$1.47

Insider Trading Volume

Insider Buying: ALEC insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of ALEC?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders7,112,9126.52%
General Public10,374,9129.51%
VC/PE Firms16,853,81715.4%
Institutions74,809,83168.5%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 72.32% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
9.16%
TCG Crossover Management, LLC
10,000,000US$20.1m0%0.61%
6.55%
BlackRock, Inc.
7,147,766US$14.4m-0.7%no data
6.33%
The Vanguard Group, Inc.
6,908,054US$13.9m14.5%no data
6.28%
Polaris Venture Partners, Inc.
6,853,817US$13.8m-30.5%25.12%
5.19%
Arnon Rosenthal
5,666,670US$11.4m1.39%no data
3.56%
Foresite Capital Management, LLC
3,887,200US$7.8m0%0.63%
3.25%
MRL Ventures Fund LLC
3,545,719US$7.1m0%3.31%
3.15%
Acadian Asset Management LLC
3,442,449US$6.9m45.1%0.01%
3.07%
683 Capital Management, LLC
3,350,000US$6.7m235%0.55%
2.99%
Balyasny Asset Management L.P.
3,265,575US$6.6m0%0.01%
2.17%
D. E. Shaw & Co., L.P.
2,365,151US$4.8m142%no data
2.04%
FMR LLC
2,231,075US$4.5m-85.3%no data
1.99%
Jacobs Levy Equity Management Inc
2,173,202US$4.4m76.5%0.02%
1.91%
Ikarian Capital, LLC
2,082,606US$4.2m174%0.56%
1.9%
Geode Capital Management, LLC
2,075,220US$4.2m11.5%no data
1.83%
Kynam Capital Management, LP
2,000,000US$4.0m0%0.26%
1.66%
State Street Global Advisors, Inc.
1,814,298US$3.6m4.59%no data
1.41%
Renaissance Technologies LLC
1,543,650US$3.1m62.6%no data
1.37%
Medici Capital LLC
1,500,520US$3.0m211%2.72%
1.22%
Millennium Management LLC
1,332,914US$2.7m15.4%no data
1.2%
Euclidean Capital LLC
1,307,858US$2.6m0%0.64%
1.07%
Marshall Wace LLP
1,166,817US$2.3m669%no data
1.02%
Spruce Street Capital LP
1,117,986US$2.2m0%0.76%
1.02%
ADAR1 Capital Management, LLC
1,108,000US$2.2m0%0.16%
0.97%
Deerfield Management Company, L.P.
1,055,192US$2.1m0%0.03%

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/02/20 12:55
End of Day Share Price 2026/02/20 00:00
Earnings2025/09/30
Annual Earnings2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Alector, Inc. is covered by 14 analysts. 8 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Alec StranahanBofA Global Research
Thomas ShraderBTIG
Pete StavropoulosCantor Fitzgerald & Co.