organization · Reporting owner

Polaris Venture Partners VI (AIV-B), L.P.

Disclosed activity across 1 company

Tapewire entity: 90387
SEC CIK: 0001767130

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
Alector, Inc.ALEC · Entity 6051	10% owner	May 29, 2024	May 31, 2024

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Alector, Inc.

Report date May 29, 2024 · Filed May 31, 2024

Jointly reported with Polaris Venture Management Co. VI, L.L.C., Polaris Venture Partners VI (AIV), L.P., Polaris Venture Partners Founders' Fund VI, L.P., Polaris Venture Partners VI, L.P.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee footnote	9,853,817	Reported balance After 2024-05-29 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2024-05-29 · Other · Disposed 500,000 · Balance 9,853,817 F1: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (p/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). F2: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F3: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F4: 544,039 shares are held by PVPFF VI, 7,072,644 shares are held by PVP VI AIV, 1,738,666 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.
Common StockSEC Table I · non-derivative	Direct	98,533	Reported balance After 2024-05-29 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 2 · 2024-05-29 · Other · Acquired 98,533 · Balance 98,533 F5: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds. F6: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.
Common StockSEC Table I · non-derivative	Direct	0	Reported balance After 2024-05-29 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 3 · 2024-05-29 · Other · Disposed 98,533 · Balance 0 F8: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members. F6: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (p/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds").

F2: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F3: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

F4: 544,039 shares are held by PVPFF VI, 7,072,644 shares are held by PVP VI AIV, 1,738,666 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

F5: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds.

F6: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F7: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

F8: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members.

Transaction history

JSON API

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
May 29, 2024 Filed May 31, 2024 21:24 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000950170-24-067444 · ownership.xml · nonDerivative · entry 3 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
May 29, 2024 Filed May 31, 2024 21:24 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000950170-24-067444 · ownership.xml · nonDerivative · entry 2 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 98,533 F5 · kind: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
May 29, 2024 Filed May 31, 2024 21:24 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	500,000	$0.00	$0.00	Disclosure SEC source: 0000950170-24-067444 · ownership.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 9,853,817 F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (p/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). F2 · shares: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F3 · shares: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F4 · ownership.nature: 544,039 shares are held by PVPFF VI, 7,072,644 shares are held by PVP VI AIV, 1,738,666 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
April 30, 2024 Filed May 2, 2024 21:32 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000950170-24-052329 · ownership.xml · nonDerivative · entry 3 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
April 30, 2024 Filed May 2, 2024 21:32 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000950170-24-052329 · ownership.xml · nonDerivative · entry 2 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 98,533 F5 · kind: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
April 30, 2024 Filed May 2, 2024 21:32 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	500,000	$0.00	$0.00	Disclosure SEC source: 0000950170-24-052329 · ownership.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 10,353,817 F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (p/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). F2 · shares: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F3 · shares: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F4 · ownership.nature: 571,645 shares are held by PVPFF VI, 7,451,824 shares are held by PVP VI AIV, 1,831,880 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
September 11, 2023 Filed Sep 13, 2023 20:33 UTC	Alector, Inc. ALEC · Entity 6051	SaleCommon Stock	500,000	$6.00	$3,000,000.00	Disclosure SEC source: 0000899243-23-018840 · doc4.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 10,853,817 F1 · shares: 27,606 shares were sold by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), 379,180 shares were sold by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,214 shares were sold by Polaris Venture Partners VI (AIV-B), L.P. (p/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). F2 · shares: (Continued from footnote 1) The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire, a member of the Issuer's board of directors, are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F3 · ownership.nature: 599,251 shares are held by PVPFF VI, 7,831,004 shares are held by PVP VI AIV, 1,925,094 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
August 22, 2023 Filed Aug 24, 2023 21:26 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000899243-23-018377 · doc4.xml · nonDerivative · entry 3 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including Terrance McGuire who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
August 22, 2023 Filed Aug 24, 2023 21:26 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000899243-23-018377 · doc4.xml · nonDerivative · entry 2 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 98,533 F5 · kind: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including Terrance McGuire who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
August 22, 2023 Filed Aug 24, 2023 21:26 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	500,000	$0.00	$0.00	Disclosure SEC source: 0000899243-23-018377 · doc4.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 11,353,817 F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (p/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). F2 · shares: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire, a member of the Issuer's board of directors, are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F3 · shares: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F4 · ownership.nature: 626,857 shares are held by PVPFF VI, 8,210,184 shares are held by PVP VI AIV, 2,018,308 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
November 16, 2022 Filed Nov 18, 2022 22:17 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000899243-22-036406 · doc4.xml · nonDerivative · entry 3 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including Terrance McGuire who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
November 16, 2022 Filed Nov 18, 2022 22:17 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000899243-22-036406 · doc4.xml · nonDerivative · entry 2 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 98,533 F5 · kind: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including Terrance McGuire who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
November 16, 2022 Filed Nov 18, 2022 22:17 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	500,000	$0.00	$0.00	Disclosure SEC source: 0000899243-22-036406 · doc4.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner Polaris Venture Partners VI (AIV-B), L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 11,853,817 F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (p/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). F2 · shares: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire, a member of the Issuer's board of directors, are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F3 · shares: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F4 · ownership.nature: 654,463 shares are held by PVPFF VI, 8,589,364 shares are held by PVP VI AIV, 2,111,522 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
December 21, 2021 Filed Dec 23, 2021 21:44 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000899243-21-049599 · doc4.xml · nonDerivative · entry 3 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including Terrance McGuire who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
December 21, 2021 Filed Dec 23, 2021 21:44 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	98,533	$0.00	$0.00	Disclosure SEC source: 0000899243-21-049599 · doc4.xml · nonDerivative · entry 2 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 98,533 F5 · kind: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds. F6 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including Terrance McGuire who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F7 · shares: (Continued from footnote 6) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
December 21, 2021 Filed Dec 23, 2021 21:44 UTC	Alector, Inc. ALEC · Entity 6051	OtherCommon Stock	500,000	$0.00	$0.00	Disclosure SEC source: 0000899243-21-049599 · doc4.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 12,353,817 F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (f/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). F2 · shares: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire, a member of the Issuer's board of directors, are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F3 · shares: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F4 · ownership.nature: 682,069 shares are held by PVPFF VI, 8,968,544 shares are held by PVP VI AIV, 2,204,736 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
June 23, 2020 Filed Jun 25, 2020 21:47 UTC	Alector, Inc. ALEC · Entity 6051	SaleCommon Stock	4,377	$31.54	$138,062.84	Disclosure SEC source: 0000899243-20-017680 · doc4.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 12,853,817 F1 · shares: 242 shares were sold by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 3,153 shares were sold by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 982 shares were sold by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and Terrance McGuire, a member of the Issuer's board of directors, are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds. F2 · shares: (Continued from footnote 1) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.50 to $31.61, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (3) to this Form 4. F4 · ownership.nature: 709,675 shares are held by PVPFF VI, 9,347,724 shares are held by PVP VI AIV, 2,297,950 shares are held by PVP VI Feeder and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionSeries E Preferred Stock · Derivative	527,597	$0.00	$0.00	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · derivative · entry 12 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 0 Underlying: Common Stock · 527,597 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.exercise_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.expiration_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F7 · ownership.nature: 29,129 shares are held by PVPFF VI and 498,468 shares are held by PVP VI. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionSeries D Preferred Stock · Derivative	1,246,883	$0.00	$0.00	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · derivative · entry 11 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 0 Underlying: Common Stock · 1,246,883 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.exercise_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.expiration_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F6 · ownership.nature: 68,842 shares are held by PVPFF VI, 945,571 shares are held by PVP VI AIV and 232,470 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionSeries C Preferred Stock · Derivative	2,808,989	$0.00	$0.00	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · derivative · entry 10 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 0 Underlying: Common Stock · 2,808,989 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.exercise_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.expiration_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F5 · ownership.nature: 155,087 shares are held by PVPFF VI, 2,130,190 shares are held by PVP VI AIV and 523,712 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionSeries B Preferred Stock · Derivative	2,500,000	$0.00	$0.00	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · derivative · entry 9 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 0 Underlying: Common Stock · 2,500,000 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.exercise_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.expiration_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F4 · ownership.nature: 138,030 shares are held by PVPFF VI, 1,895,867 shares are held by PVP VI AIV and 466,103 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionSeries A-2 Preferred Stock · Derivative	5,274,725	$0.00	$0.00	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · derivative · entry 8 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 0 Underlying: Common Stock · 5,274,725 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.exercise_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.expiration_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F3 · ownership.nature: 291,223 shares are held by PVPFF VI, 4,000,075 shares are held by PVP VI AIV and 983,427 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionSeries A-1 Preferred Stock · Derivative	500,000	$0.00	$0.00	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · derivative · entry 7 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 0 Underlying: Common Stock · 500,000 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.exercise_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F1 · derivative.expiration_date: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F2 · ownership.nature: 27,606 shares are held by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 379,174 shares are held by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,220 shares are held by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionCommon Stock	527,597	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · nonDerivative · entry 6 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnotes Disclosed balance after: 12,858,194 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F2 · ownership.nature: 27,606 shares are held by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 379,174 shares are held by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,220 shares are held by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F3 · ownership.nature: 291,223 shares are held by PVPFF VI, 4,000,075 shares are held by PVP VI AIV and 983,427 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F4 · ownership.nature: 138,030 shares are held by PVPFF VI, 1,895,867 shares are held by PVP VI AIV and 466,103 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F5 · ownership.nature: 155,087 shares are held by PVPFF VI, 2,130,190 shares are held by PVP VI AIV and 523,712 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F6 · ownership.nature: 68,842 shares are held by PVPFF VI, 945,571 shares are held by PVP VI AIV and 232,470 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F7 · ownership.nature: 29,129 shares are held by PVPFF VI and 498,468 shares are held by PVP VI. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionCommon Stock	1,246,883	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · nonDerivative · entry 5 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnotes Disclosed balance after: 12,330,597 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F2 · ownership.nature: 27,606 shares are held by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 379,174 shares are held by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,220 shares are held by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F3 · ownership.nature: 291,223 shares are held by PVPFF VI, 4,000,075 shares are held by PVP VI AIV and 983,427 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F4 · ownership.nature: 138,030 shares are held by PVPFF VI, 1,895,867 shares are held by PVP VI AIV and 466,103 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F5 · ownership.nature: 155,087 shares are held by PVPFF VI, 2,130,190 shares are held by PVP VI AIV and 523,712 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F6 · ownership.nature: 68,842 shares are held by PVPFF VI, 945,571 shares are held by PVP VI AIV and 232,470 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionCommon Stock	2,808,989	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · nonDerivative · entry 4 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnotes Disclosed balance after: 11,083,714 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F2 · ownership.nature: 27,606 shares are held by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 379,174 shares are held by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,220 shares are held by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F3 · ownership.nature: 291,223 shares are held by PVPFF VI, 4,000,075 shares are held by PVP VI AIV and 983,427 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F4 · ownership.nature: 138,030 shares are held by PVPFF VI, 1,895,867 shares are held by PVP VI AIV and 466,103 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F5 · ownership.nature: 155,087 shares are held by PVPFF VI, 2,130,190 shares are held by PVP VI AIV and 523,712 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionCommon Stock	2,500,000	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · nonDerivative · entry 3 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnotes Disclosed balance after: 8,274,725 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F2 · ownership.nature: 27,606 shares are held by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 379,174 shares are held by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,220 shares are held by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F3 · ownership.nature: 291,223 shares are held by PVPFF VI, 4,000,075 shares are held by PVP VI AIV and 983,427 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F4 · ownership.nature: 138,030 shares are held by PVPFF VI, 1,895,867 shares are held by PVP VI AIV and 466,103 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionCommon Stock	5,274,725	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · nonDerivative · entry 2 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnotes Disclosed balance after: 5,774,725 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F2 · ownership.nature: 27,606 shares are held by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 379,174 shares are held by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,220 shares are held by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. F3 · ownership.nature: 291,223 shares are held by PVPFF VI, 4,000,075 shares are held by PVP VI AIV and 983,427 shares are held by PVP VI Feeder. PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document
February 11, 2019 Filed Feb 13, 2019 22:33 UTC	Alector, Inc. ALEC · Entity 6051	ConversionCommon Stock	500,000	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-19-009780 · doc4.xml · nonDerivative · entry 1 Polaris Venture Management Co. VI, L.L.C. · CIK 0001665594 · 10% owner Polaris Venture Partners VI (AIV), L.P. · CIK 0001767127 · 10% owner Polaris Venture Partners Founders' Fund VI, L.P. · CIK 0001575691 · 10% owner Polaris Venture Partners VI, L.P. · CIK 0001493463 · 10% owner PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. · CIK 0001767130 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnote Disclosed balance after: 500,000 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each of the Series A-1 Preferred Stock, Series A-2 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. F2 · ownership.nature: 27,606 shares are held by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 379,174 shares are held by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 93,220 shares are held by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that PVM is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any. Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.