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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1681087	Tectonic Therapeutic Inc.	TECX	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1055624	A Timothy Springer	C/O Tectonic Therapeutic, Inc. 490 Arsenal Way, Suite 210 Watertown MA 02472		No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2025-02-05	129,294	$54.14	4,226,058	No	4	P	Direct
Common Stock	Acquisiton	2025-02-05	660,000	$50.00	970,223	No	4	P	Indirect	By LLC

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Direct
No	4	P	Indirect	By LLC

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	186,134	Indirect	By Spouse

Footnotes

These shares of common stock were purchased in a private placement transaction on February 5, 2025, which was previously announced on the Issuer's Current Report on Form 8-K, filed with the Securities and Exchange Commission on February 3, 2025. These shares were offered and sold in reliance on the exemption afforded by Regulation D of the Securities Act of 1933, as amended.
These shares are held by TAS Partners LLC ("TAS"). The Reporting Person is the sole managing member of TAS and, as such, has sole voting and dispositive power over the shares held by TAS. The Reporting Person disclaims beneficial ownership of the shares held by TAS except to the extent of his pecuniary interest therein and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.