13D Filings
Vigil Neuroscience, Inc.
Amendment
Ownership

3.50%

Total Shares

1,634,798

Issuer CIK

1827087

CUSIP

92673K108

Event Date

Jun 9, 2025

Accepted

Jun 12, 2025, 05:33 PM

Reporting Persons (3)
NameType% of ClassAggregateSole VotingShared Voting
Vida Ventures III, L.P.
Partnership
3.50%1,631,03801,631,038
Vida Ventures GP III, L.L.C.
Other
3.50%1,634,79801,634,798
Vida Ventures III-A, L.P.
Partnership
0.00%3,76003,760
Disclosure Items (6)

Security Title

Common Stock, $0.0001 par value per share

Issuer Name

Vigil Neuroscience, Inc.

Issuer Address

100 Forge Road, Watertown, MA, 02472

Filing Persons

The information set forth in Item 2(a) of the Original Schedule 13D is incorporated herein by reference.

Business Address

The information set forth in Item 2(b) of the Original Schedule 13D is incorporated herein by reference.

Principal Occupation

The information set forth in Item 2(c) of the Original Schedule 13D is incorporated herein by reference.

Convictions

The information set forth in Item 2(e) of the Original Schedule 13D is incorporated herein by reference.

Citizenship

The information set forth in Item 2(f) of the Original Schedule 13D is incorporated herein by reference.

The information set forth in Item 3 of the Original Schedule 13D is incorporated herein by reference.

The information set forth in Item 4 of the Original Schedule 13D is incorporated herein by reference.

Percentage of Class

See Items 7-11 of the cover pages of this Amendment No. 2. The information reported on such cover pages is reported as of June 11, 2025.

Number of Shares

See Items 7-11 of the cover pages of this Amendment No. 2. The information reported on such cover pages is reported as of June 11, 2025.

Transactions

On June 9, 2025, Vida III sold 367,930 shares of Common Stock at a weighted average price per share of $7.8809 for aggregate proceeds of $2,899,618.414. On June 9, 2025, Vida III-A sold 848 shares of Common Stock at a weighted average price per share of $7.8809 for aggregate proceeds of $6,684.13. On June 10, 2025, Vida III sold 508,273 shares of Common Stock at a weighted average price per share of $7.8734 for aggregate proceeds of $4,001,839.32. On June 10, 2025, Vida III-A sold 1,172 shares of Common Stock at a weighted average price per share of $7.8734 for aggregate proceeds of $9,224.94. On June 11, 2025, Vida III sold 328,222 shares of Common Stock at a weighted average price per share of $7.8702 for aggregate proceeds of $2,583,241.50. On June 11, 2025, Vida III-A sold 757 shares of Common Stock at a weighted average price per share of $7.8702 for aggregate proceeds of $5,954.67.

Shareholders

The information set forth in Item 5(d) of the Original Schedule 13D is incorporated herein by reference.

Date of 5% Ownership

June 10, 2025

The information set forth in Item 6 of the Original Schedule 13D is incorporated herein by reference.