Total buying$00 buys
TECX
Tectonic Therapeutic, Inc.
NasdaqHealthcareBiological Products, (No Diagnostic Substances)
Insider activity for last month from 09/24 to 10/24.
How these metrics are calculated
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 selling$12.3k1 sells
Net open-market−$12.3kBuying minus selling
Active insiders5Distinct reporting owners
Insider activity report
Calendar-month buckets within the selected date range
Latest filing: Oct 02, 2026
Open-market transaction mix · 1 transactions in the selected period
Code A includes awards, grants and other acquisitions; these are not open-market buys. A rolling period can include partial calendar months.
View exact monthly counts and disclosed values
| Month | Buys | Sells | Awards (A) | Buy value | Sell value | Net P/S value |
|---|---|---|---|---|---|---|
| Sep 2026 | 0 | 1 | 0 | $0 | $12.3k | -$12.3k |
| Oct 2026 | 0 | 0 | 0 | $0 | $0 | $0 |
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (5)Sep 2026Oct 2026
Largest insider activity
By absolute net disclosed value · current transaction page- RA-$36.6k
- MP-$22.9k
- RK-$12.4k
- LD-$12.3k
- SM-$9.7k
TECX transaction history
Newest filings · 20 transactions per pageLatest insider transactions
Form 4 filings from last month.| Company | Insider | Activity | Disclosed value | Filed (ET) |
|---|---|---|---|---|
TECXTectonic Therapeutic, Inc. | Lochner DanielCFO | F · withholdingSEC filing ↗ | -$12.3kView disclosure → | |
TECXTectonic Therapeutic, Inc. | McNamara PeterCSO | S · sale10b5-1 detectedSEC filing ↗ | -$12.3kView disclosure → | |
TECXTectonic Therapeutic, Inc. | McNamara PeterCSO | F · withholding10b5-1 detectedSEC filing ↗ | -$10.5kView disclosure → | |
TECXTectonic Therapeutic, Inc. | Ruddy Marcella K.CMO | F · withholdingSEC filing ↗ | -$12.4kView disclosure → | |
TECXTectonic Therapeutic, Inc. | Reicin AliseCEO | F · withholdingSEC filing ↗ | -$36.5kView disclosure → | |
TECXTectonic Therapeutic, Inc. | Schwabish MarcCBO | F · withholdingSEC filing ↗ | -$9.72kView disclosure → |
Filing-only signals
Deterministic matches in the selected period
Filing detail checks
Secondary metrics for the selected periodTransaction codes
By Form 4 transaction code in selected period6transactionstxns
- F · Tax withholding · dominant5 · 83%
- S · Open-market sells1 · 17%
Activity by reported role
A joint filing can contribute to multiple rolesCSO2
CBO1
Chief executive officer1
Chief financial officer1
CMO1
Reported Holdings After
Separated by insider, security, and ownership type
McNamara PeterCommon Stock · Direct
54,305Sep 30, 2026
Schwabish MarcCommon Stock · Direct
44,903Sep 25, 2026
Reicin AliseCommon Stock · Direct
309,078Sep 25, 2026
Ruddy Marcella K.Common Stock · Direct
67,157Sep 25, 2026
Lochner DanielCommon Stock · Direct
58,024Sep 25, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Current transaction page only · each cell is a filing date · buys green, sells redSep 24 → Oct 24
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Tectonic Therapeutic, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Tectonic Therapeutic, Inc.?
Lochner Daniel, McNamara Peter, Ruddy Marcella K., REICIN ALISE, Schwabish Marc.
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 Sep 30, 2026 valued at $12.3k. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $12,349.44. 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.