TECX: SEC Form 4 filed by Tectonic Therapeutic Inc.

Historical context for TECX

Across the 16 sessions after earlier TECX headlines, the stock closed higher 8 times and lower 8 times, with a median move of 2.8% in either direction. This shows timing only: many things move a stock in a session, and these figures do not show that any headline caused a move.

Earlier insider filings at TECX

• Oct 2, 2026Chief Financial Officer Lochner Daniel covered exercise/tax liability with 520 shares, decreasing direct ownership by 0.89% to 58,024 units (SEC Form 4) to cover taxes
• Oct 2, 2026Chief Scientific Officer Mcnamara Peter covered exercise/tax liability with 444 shares and sold $12,349 worth of shares (536 units at $23.04) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 54,305 units (SEC Form 4) to cover withholding tax
• Oct 2, 2026Chief Medical Officer Ruddy Marcella K. covered exercise/tax liability with 525 shares, decreasing direct ownership by 0.78% to 67,157 units (SEC Form 4) to satisfy withholding tax
• Oct 2, 2026Chief Executive Officer Reicin Alise covered exercise/tax liability with 1,545 shares, decreasing direct ownership by 0.50% to 309,078 units (SEC Form 4) (for withholding tax)
• Oct 2, 2026Chief Business Officer Schwabish Marc covered exercise/tax liability with 411 shares, decreasing direct ownership by 0.91% to 44,903 units (SEC Form 4) (withholding obligation)