Marcella K. Ruddy - 25 Sep 2025 Form 4 Insider Report for Tectonic Therapeutic, Inc. (TECX)

Role
Chief Medical Officer
Signature
/s/ Daniel Lochner, Attorney-in-Fact
Issuer symbol
TECX
Transactions as of
25 Sep 2025
Net transactions value
$0
Form type
4
Filing time
29 Sep 2025, 17:00:06 UTC
Previous filing
16 Jun 2025
Next filing
10 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Ruddy Marcella K. Chief Medical Officer C/O TECTONIC THERAPEUTIC, INC., 490 ARSENAL WAY, SUITE 210, WATERTOWN /s/ Daniel Lochner, Attorney-in-Fact 29 Sep 2025 0002023849

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TECX Common Stock Award $0 +5,370 +11% $0.000000 55,311 25 Sep 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction TECX Employee Stock Option (Right to Buy) Award $0 +9,750 $0.000000 9,750 25 Sep 2025 Common Stock 9,750 $14.71 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. The shares shall vest in 3 equal annual installments on each of September 25, 2026, September 25, 2027 and September 25, 2028, subject to the Reporting Person's continued service to the Issuer on each such vesting date.
F2 The shares subject to the option vest in 48 equal monthly installments beginning on October 25, 2025, subject to the Reporting Person's continued service to the Issuer on each such vesting date.