What does CUSIP 014442107 represent in this 13F holders report?

CUSIP 014442107 is the security identifier for ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

How many institutions held ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share in Q3 2024?

158 institutional investors reported ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share for Q3 2024. Use the holders table for investor-level position and value details.

Alector, Inc. - Common Stock, $0.0001 par value per share (ALEC)

CUSIP: 014442107

Q3 2024 13F Holders as of 30 Sep 2024

Security type / class: Equity / Common Stock, $0.0001 par value per share
Total 13F shares: 72,547,576
Total 13F value: $338,388,962
Share change: -234,943
Put/Call ratio: 62%
SEC-reported price per share: $4.66
Number of holders: 158
Value change: -$1,018,637
Number of buys: 66
Number of sells: 66
Shares outstanding: 147,058,824

Security key

014442107

Report period

Q3 2024

Institutions

158

Top holders

ALEC full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 Alector, Inc. SEC filings Alector, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 014442107

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Polaris Venture Managemen...

Disclosed value leader

Polaris Venture Managemen...

Comparable rows

0/15

Latest evidence

30 Jun 2024

3/4/5 13F Highest disclosed value: $68,200,238 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

Polaris Venture Management Co. VI, L.L.C. has the largest disclosed position value at $68.2M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Polaris Venture Management Co. VI, L.L.C.'s linked filing trail.

Disclosed position value Top 5

Polaris Venture Management Co. VI... $68.2M

Terrance McGuire $60.65M

BlackRock Finance, Inc. $41.32M

VANGUARD GROUP INC $24.16M

Deep Track Capital, LP $21.03M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Polaris Venture Management Co. VI, L.L.C.	3/4/5 10%+ Owner 3/4/5	— denominator unverified	$68,200,238 9,853,817 shares	—	29 May 2024
Terrance McGuire	3/4/5 Director, 10%+ Owner 3/4/5	— denominator unverified	$60,653,001 10,908,813 shares	—	11 Sep 2023
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$41,320,525 9,101,437 shares	—	30 Jun 2024
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$24,157,204 5,320,970 shares	—	30 Jun 2024
Deep Track Capital, LP	13F Company 13F	— denominator unverified	$21,029,271 4,631,998 shares	—	30 Jun 2024
Tillman U. Gerngross	3/4/5 Director 3/4/5	— mixed-class rows	$14,702,414 2,656,679 shares mixed-class rows	—	14 Jun 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2024

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

158

72,547,576

Rows available

158

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2024 vs Q2 2024 Across Filers

Q2 2024 holders

157

Q3 2024 holders

158

Holder diff

Investor	Q2 2024 Shares	Q3 2024 Shares	Share Diff	Share Chg %	Q2 2024 value	Q3 2024 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend