Daniel Lochner - 10 Feb 2026 Form 4 Insider Report for Tectonic Therapeutic, Inc. (TECX)

Role: Chief Financial Officer
Signature: /s/ Daniel Lochner
Issuer symbol: TECX
Transactions as of: 10 Feb 2026
Net transactions value: +$129,660
Form type: 4
Filing time: 11 Feb 2026, 17:32:12 UTC
Previous filing: 10 Feb 2026
Next filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lochner Daniel	Chief Financial Officer	C/O TECTONIC THERAPEUTIC, INC., 490 ARSENAL WAY, SUITE 200, WATERTOWN	/s/ Daniel Lochner	11 Feb 2026	0001791187

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TECX	Common Stock	Purchase	$129,660	+6,000	+23%	$21.61	32,044	10 Feb 2026	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $21.24 to $21.82, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

Content

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $21.24 to $21.82, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.