Tectonic Therapeutic, Inc.

TECX

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0002023255-26-000004
Filing date: Mar 5, 2026
Earliest execution date: Mar 3, 2026

Summary

Type

Sell

Net shares

+19,701

% of shares

50.35%

Amount (USD)

$77,626

Insider confidence score

95.0 out of 100

Positive

  • Massive buy (≥10% of shares)
  • Significant buy amount ($50K+)

Stock transactions

Transaction 1

Security

Common Stock

Action

Sell

Date

2026-03-03

Code

S

Net shares

-1,649.0

Price per Share

$22.06

Amount (USD)

$36,376.94

Acquired/Disposed

Disposed

Shares Owned Before

39,131.0

Shares Owned After

37,482.0

Transaction 2

Security

Common Stock

Action

Grant

Date

2026-03-04

Code

A

Net shares

+23,000.0

Acquired/Disposed

Acquired

Shares Owned Before

37,482.0

Shares Owned After

60,482.0

Transaction 3

Security

Common Stock

Action

Sell

Date

2026-03-04

Code

S

Net shares

-1,650.0

Price per Share

$25.00

Amount (USD)

$41,250.00

Acquired/Disposed

Disposed

Shares Owned Before

60,482.0

Shares Owned After

58,832.0

Derivative Transactions

Transaction 1

Security

Employee Stock Option (Right to Buy)

Action

Grant

Date

2026-03-04

Code

A

Net shares

+21,000.0

Acquired/Disposed

Acquired

Shares Owned Before

0.0

Shares Owned After

21,000.0

Filing's footnotes

1. These sales were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 14, 2025.

2. 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.

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.

ℹ️ Filed under Rule 10b5-1 trading plan

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.