GV 2019, L.P. - 30 Sep 2025 SCHEDULE 13G/A Report for Prime Medicine, Inc. Common Stock, par value $0.00001 per share (PRME)

Filing manager
GV 2019, L.P.
Reporting owner
Alphabet Holdings LLC
Security
Prime Medicine, Inc. Common Stock, par value $0.00001 per share
Beneficially owned shares
16,562,498 shares
Ownership signal CIK-linked ownership evidence from parsed SEC filings. 2 signals
Large-stake signal

Form

SCHEDULE 13G/A

Passive or exempt beneficial ownership filing.

Ownership

12%

Beneficial ownership of this reported class.

Shares

16,562,498 shares

Shares beneficially owned as disclosed.

Event date

30 Sep 2025

Date tied to the ownership event or amendment.

Accepted by SEC

12 Nov 2025

EDGAR acceptance date.

How to read this large-stake filing
  • Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
  • Compare this filing with the holder history and issuer page before treating the percentage as a current position.
  • Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Class ownership
12%
Subject security Names, identifiers, and filing context for this profile. 2 source fields
Symbol
PRME
Shares outstanding
134,654,455 shares
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
SCHEDULE 13G/A
Accepted by SEC
12 Nov 2025, 16:30:21 UTC
Event date
30 Sep 2025
Source filing
View source filing

Key filing fact

GV 2019, L.P. disclosed 12% ownership in Prime Medicine, Inc. Common Stock, par value $0.00001 per share (PRME) on 30 Sep 2025.

Key facts

  • GV 2019, L.P. filed SCHEDULE 13G/A for Prime Medicine, Inc. Common Stock, par value $0.00001 per share (PRME).
  • Disclosed ownership: 12%.
  • Date of event: 30 Sep 2025.

Change

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 12 Nov 2025, 16:30.

Research use

  • This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
  • Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

View source filing

Reporting persons

Disclosed reporting parties (12)

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name Ownership Shares owned Sole voting power Shared voting power Signature Title CIK
GV 2019, L.P. 7.5% 10,100,058 0 10,100,058 /s/ Inga Goldbard Inga Goldbard/General Counsel of GV 2019 GP, L.L.C., the General Partner of GV 2019 GP, L.P., its General Partner
GV 2019 GP, L.P. 7.5% 10,100,058 0 10,100,058 /s/ Inga Goldbard Inga Goldbard/General Counsel of GV 2019 GP, L.L.C., its General Partner
GV 2019 GP, L.L.C. 7.5% 10,100,058 0 10,100,058 /s/ Inga Goldbard Inga Goldbard/General Counsel
GV 2021, L.P. 2.4% 3,262,440 0 3,262,440 /s/ Inga Goldbard Inga Goldbard/General Counsel of GV 2021 GP, L.L.C., the General Partner of GV 2021 GP, L.P., its General Partner
GV 2021 GP, L.P. 2.4% 3,262,440 0 3,262,440 /s/ Inga Goldbard Inga Goldbard/General Counsel of GV 2021 GP, L.L.C., its General Partner
GV 2021 GP, L.L.C. 2.4% 3,262,440 0 3,262,440 /s/ Inga Goldbard Inga Goldbard/General Counsel
GV 2023, L.P. 2.4% 3,200,000 0 3,200,000 /s/ Inga Goldbard Inga Goldbard/General Counsel of GV 2023 GP, L.L.C., the General Partner of GV 2023 GP, L.P., its General Partner
GV 2023 GP, L.P. 2.4% 3,200,000 0 3,200,000 /s/ Inga Goldbard Inga Goldbard/General Counsel of GV 2023 GP, L.L.C., its General Partner
GV 2023 GP, L.L.C. 2.4% 3,200,000 0 3,200,000 /s/ Inga Goldbard Inga Goldbard/General Counsel
Alphabet Holdings LLC 12% 16,562,498 0 16,562,498 /s/ Kathryn W. Hall Kathryn W. Hall/Secretary
XXVI Holdings Inc. 12% 16,562,498 0 16,562,498 /s/ Kathryn W. Hall Kathryn W. Hall/Assistant Secretary
Alphabet Inc. 12% 16,562,498 0 16,562,498 /s/ Kathryn W. Hall Kathryn W. Hall/Assistant Secretary
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