Tectonic Therapeutic, Inc.

TECX

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001757533-26-000009
Filing date: Mar 5, 2026
Earliest execution date: Mar 4, 2026
Reporting Owners: REICIN ALISE (CEO)

Summary

Type

Neutral

Net shares

+76,500

% of shares

21.13%

Amount (USD)

$0

Insider confidence score

90.0 out of 100

Positive

  • Massive buy (≥10% of shares)

Negative

  • Minimal buy amount (<$10K)

Stock transactions

Transaction 1

Security

Common Stock

Action

Grant

Date

2026-03-04

Code

A

Net shares

+76,500.0

Acquired/Disposed

Acquired

Shares Owned Before

235,047.0

Shares Owned After

311,547.0

Derivative Transactions

Transaction 1

Security

Employee Stock Option (Right to Buy)

Action

Grant

Date

2026-03-04

Code

A

Net shares

+69,250.0

Acquired/Disposed

Acquired

Shares Owned Before

0.0

Shares Owned After

69,250.0

Filing's footnotes

1. 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 March 4, 2027, March 4, 2028 and March 4, 2029, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

2. These shares are held by the Reicin-Boiarsky Family Trust (the &quot;Trust&quot;). The Reporting Person's spouse is a co-trustee of the Trust. Accordingly, the Reporting Person may be deemed to have shared voting and dispositive power over the securities held by the Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of her 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.

3. The shares subject to the option vest in 48 equal monthly installments beginning on April 4, 2026, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.