Latest filingSep 08, 2026Most recent Form 4
TECX
Tectonic Therapeutic, Inc.
NasdaqHealthcareBiological Products, (No Diagnostic Substances)
Insider activity for last month from 08/09 to 09/09. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$157k1 sells
Net open-market-$157k5 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period8transactions
- A · Grants / awards · dominant5 · 63%
- M · Option exercise2 · 25%
- S · Open-market sells1 · 13%
Activity by reported role
A joint filing can contribute to multiple roles8transactions
- CSO · dominant4 · 50%
- CBO1 · 13%
- Chief executive officer1 · 13%
- Chief financial officer1 · 13%
- CMO1 · 13%
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (5)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeMcNamara PeterCommon Stock · Direct
55,285Aug 25, 2026
McNamara PeterEmployee Stock Option (Right to Buy) · Direct
21,000Sep 03, 2026
Reicin AliseEmployee Stock Option (Right to Buy) · Direct
69,250Sep 03, 2026
Ruddy Marcella K.Employee Stock Option (Right to Buy) · Direct
24,250Sep 03, 2026
Lochner DanielEmployee Stock Option (Right to Buy) · Direct
24,250Sep 03, 2026
Schwabish MarcEmployee Stock Option (Right to Buy) · Direct
17,750Sep 03, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 09 → Sep 09
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Top insiders
By absolute net value across the selected period- MP-$1.6k
Recent filing activity
Most recent 1 transactions · color = transaction code- SSell08/26-$157kSEC
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
TECX transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| TECX | McNamara Peter | CSO | sale10b5-1 | 43 | -$157k | S | — | 08/26 | 08/25 |
Tectonic Therapeutic, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Tectonic Therapeutic, Inc.?
Schwabish Marc, McNamara Peter, Lochner Daniel, Ruddy Marcella K., REICIN ALISE.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
McNamara Peter reported a sale on Aug 25, 2026 valued at $157k. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $1,570.36. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.