Transaction · 0002023255-26-000012

McNamara Peter

McNamara Peter, CSO, reported a transaction classified as withholding at Tectonic Therapeutic, Inc. involving 444.000000 shares for an estimated $10509.48. Reported holdings after the transaction were 54841.000000 shares. The stored filing text includes a detected 10b5-1 reference.

withholdingSEC transaction code FCSO
TECXTectonic Therapeutic, Inc.
Filing timeOct 02
Trade dateSep 25, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position tradedUnavailableCalculated only for code-P purchases and code-S sales.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$22.54
Pre-filing
1mo ago +59.6%1w ago +19.8%1d ago +7.0%
Returns since
7d30d90d180d1y

TECX price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
TECX since 2026-10-02Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
withholding
Code F
Identifier
0002023255-26-000012
Common Stock
Transaction date
Sep 25, 2026
Filed Oct 02, 2026, 09:00 PM · 7d delay
Shares
444 sh
$23.67 per share
Estimated value
-$10.5k
Computed from shares × price
Holdings after
54.8k sh
Direct

Filing warnings

Notes recorded with this filing
1 warning
delayed filingThe filing was reported 7 calendar days after the transaction date.

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Delayed Filing Direct Ownership 10b5-1 Detected
-32score
Filing-only score

-32

Compact filing score computed from stored Form 4 facts. Version v1.

Low filing signal

This filing has a meaningfully negative filing-only score. It is likely less useful as a positive insider-activity signal.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Scientific Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    This transaction reported represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of the restrict…

  2. F2

    This sale was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 14, 2025.

  3. F3

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.61 to $23.32, inclusive. The Reporting Person undertakes to provi…

Original filing · 0002023255-26-000012
Related transactions

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Same reporting owner
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