Terrance McGuire - 03 Apr 2025 SCHEDULE 13D/A Report for Tectonic Therapeutic, Inc. Common Stock, $0.0001 par value per share (TECX)

Filing Manager
Terrance McGuire
Reporting Manager
Terrance McGuire
Security
Tectonic Therapeutic, Inc. Common Stock, $0.0001 par value per share
Symbol
TECX
Shares outstanding
10,444,063 shares
Disclosed Ownership
657,976 shares
Ownership
6.3%
Form type
SCHEDULE 13D/A
Filing time
07 Apr 2025, 17:19:24 UTC
Date of event
03 Apr 2025
Previous filing
07 Feb 2025
SEC
View on sec.gov

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Quoteable Key Fact

"Terrance McGuire disclosed 6.3% ownership in Tectonic Therapeutic, Inc. Common Stock, $0.0001 par value per share (TECX) on 03 Apr 2025."

Quick Takeaways

  • Terrance McGuire filed SCHEDULE 13D/A for Tectonic Therapeutic, Inc. Common Stock, $0.0001 par value per share (TECX).
  • Disclosed ownership: 6.3%.
  • Date of event: 03 Apr 2025.

What Changed

  • Previous schedule filing date: 07 Feb 2025.
  • Current filing was accepted on 07 Apr 2025, 17:19.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

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

See Original Filing

Reporting Managers (8)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Terrance McGuire 6.3% 657,976 0 657,976 /s/ Lauren Crockett* Lauren Crockett/Attorney-in-Fact 0001117003
Polaris Partners IX, L.P. 3.1% 573,062 0 573,062 /s/ Lauren Crockett Lauren Crockett/General Counsel of Polaris Partners GP IX, L.L.C. the General Partner of Polaris Partners IX, L.P. 0001779755
Polaris Partners GP IX, L.L.C. 3.1% 573,062 0 573,062 /s/ Lauren Crockett Lauren Crockett/General Counsel 0001877150
Polaris Founders Capital Fund I, L.P. 0.1% 20,262 0 20,262 /s/ Gregg Rubin Gregg Rubin/General Partner of Polaris Founders Capital Management Co. I, L.L.C. the General Partner of Polaris Founders Capital Fund I, L.P.
Polaris Founders Capital Fund Management Co. I, L.L.C. 0.1% 20,262 0 20,262 /s/ Gregg Rubin Gregg Rubin/General Partner
Polaris Founders Capital Fund II, L.P. 0.3% 64,652 0 64,652 /s/ Harold Friedman Harold Friedman/Vice President of Polaris Founders Capital Management Co. II, L.L.C. the General Partner of Polaris Founders Capital Fund II, L.P.
Polaris Founders Capital Fund Management Co. II, L.L.C. 0.3% 64,652 0 64,652 /s/ Harold Friedman Harold Friedman/Vice President
Jonathan Flint 0.5% 84,914 0 84,914 /s/ Lauren Crockett* Lauren Crockett/Attorney-in-Fact 0001295676

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