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SCHEDULE Filed 2025-02-10 Event 2025-02-05 SEC 0001213900-25-011462 →

SPRINGER TIMOTHY A Tectonic Therapeutic, Inc. TECX

Stake: 29.20% Shares: 4,226,058 CUSIP: 878972108 Class: Common Stock, $0.0001 par value per share

Item 4 — Purpose of Transaction

N/A

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
6 13D/G filings on this issuer
5 other filings besides this one
Filer Track Record
10 filings by this filer
9 other filings in the data moat
Short Interest · settle 2026-07-15
DTC 7.58
1,936,691 shares short · -9.4% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $10.27M
Point72 Asset Mgmt

Post-Filing Returns · since 2025-02-05 on TECX

+1 day
0.0%
+5 days
0.0%
+30 days
0.0%
+60 days
0.0%
+90 days
0.0%
+180 days
0.0%

Anchor price 36.54 on closest trading day on/after 2025-02-05. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Tectonic Therapeutic, Inc.

FiledFormFilerStakeShares
2025-02-07 SCHEDULE Vida Ventures II, LLC 5.60% 1,028,674 view →
2025-02-07 SCHEDULE MCGUIRE TERRANCE 6.30% 1,157,977 view →
2021-02-16 SC SVLSF VI, LLC view →
2019-08-06 SC Clarus Lifesciences III, L.P. view →
2019-01-11 SC Clarus Lifesciences III, L.P. view →

Other Filings by SPRINGER TIMOTHY A

FiledFormIssuerStakeShares
2025-01-15 SCHEDULE Cartesian Therapeutics, Inc. RNAC 36.90% 9,555,394 view →
2024-07-05 SC Cartesian Therapeutics, Inc. RNAC view →
2024-04-12 SC Cartesian Therapeutics, Inc. RNAC view →
2021-12-27 SC SELECTA BIOSCIENCES INC RNAC view →
2021-05-27 SC SELECTA BIOSCIENCES INC RNAC view →
2020-10-23 SC SELECTA BIOSCIENCES INC RNAC view →
2020-10-15 SC SELECTA BIOSCIENCES INC RNAC view →
2020-01-02 SC SELECTA BIOSCIENCES INC RNAC view →
2019-12-17 SC SELECTA BIOSCIENCES INC RNAC view →

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