THRDUnknownSmall-Cap
Third Harmonic Bio, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Third Harmonic Bio, Inc. (THRD), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are THRD insiders buying or selling?
Third Harmonic Bio, Inc. insiders reported no open-market purchases or sales in the last 12 months. Since September 2022, Trabud has recorded 18 Form 4 filings for THRD: 4 buys ($16.2M) and 14 sells ($15.7M).
Source: SEC EDGAR Form 4
Key Statistics (September 2022 – Nov 12, 2024)
Total Form 4 filings
18
SEC EDGAR
Insider filers
8
Insider buys (4)
$16.2M
Insider sells (14)
$15.7M
Insider sentiment
Net buyingNet insider flow of $512.7K in net buying since September 2022.
Recent THRD insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Nov 12, 2024 | Edward R. Conner | Chief Medical Officer | Sale | 2.1K | $15.00 | $31.8K | SEC ↗ |
| Oct 31, 2024 | Mark N Lampert | Other | Sale | 1.0M | $14.30 | $14.3M | SEC ↗ |
| Oct 30, 2024 | Edward R. Conner | Chief Medical Officer | Sale | 2.7K | $15.00 | $40.1K | SEC ↗ |
| Sep 20, 2024 | Edward R. Conner | Chief Medical Officer | Sale | 4.8K | $15.00 | $71.8K | SEC ↗ |
| Sep 20, 2024 | Julie Person | CHIEF ADMINISTRATIVE OFFICER | Sale | 10.0K | $14.27 | $142.7K | SEC ↗ |
| Jun 28, 2024 | Julie Person | CHIEF ADMINISTRATIVE OFFICER | Sale | 10.0K | $12.46 | $124.6K | SEC ↗ |
| Jun 10, 2024 | Jennifer Dittman | Chief Development Oper Officer | Sale | 494 | $14.17 | $7.0K | SEC ↗ |
| May 22, 2024 | Jennifer Dittman | Chief Development Oper Officer | Sale | 1.0K | $14.00 | $14.6K | SEC ↗ |
| May 20, 2024 | Jennifer Dittman | Chief Development Oper Officer | Sale | 23.6K | $14.04 | $331.1K | SEC ↗ |
| May 10, 2024 | Natalie C. Holles | CEO | Sale | 20.2K | $12.18 | $246.3K | SEC ↗ |
| Apr 15, 2024 | Natalie C. Holles | CEO | Sale | 13.6K | $12.19 | $165.2K | SEC ↗ |
| Apr 8, 2024 | Julie Person | CHIEF ADMINISTRATIVE OFFICER | Sale | 1.1K | $10.00 | $11.1K | SEC ↗ |
| Dec 7, 2023 | Julie Person | Chief Administrative Officer | Sale | 12.9K | $10.30 | $132.5K | SEC ↗ |
| Dec 7, 2023 | Edward R. Conner | Chief Medical Officer | Sale | 4.8K | $10.03 | $48.1K | SEC ↗ |
| Dec 22, 2022 | Mark N Lampert | 10% Owner | Purchase | 214.1K | $4.11 | $879.5K | SEC ↗ |
| Sep 21, 2022 | ORBIMED ADVISORS LLC | Director, 10% Owner | Purchase | 300.0K | $17.00 | $5.1M | SEC ↗ |
| Sep 21, 2022 | David P Bonita | Director, 10% Owner | Purchase | 300.0K | $17.00 | $5.1M | SEC ↗ |
| Sep 19, 2022 | Atlas Venture Fund XI, L.P. | 10% Owner | Purchase | 300.0K | $17.00 | $5.1M | SEC ↗ |
Showing the 18 most recent of 18 Form 4 filings for Third Harmonic Bio, Inc..
Most active THRD insiders
- Edward R. Conner4 filings
- Julie Person4 filings
- Jennifer Dittman3 filings
- Natalie C. Holles2 filings
- Mark N Lampert2 filings
Ask anything about THRD insider activity
Use Trabud's AI agent to query Third Harmonic Bio, Inc.'s Form 4 history in plain English — "Show me THRD CEO purchases this year" or compare it against any other ticker.
Open the AI agentTHRD insider trading FAQ
Are Third Harmonic Bio, Inc. insiders buying or selling?
Third Harmonic Bio, Inc. insiders reported no open-market purchases or sales in the last 12 months. Since September 2022, Trabud has recorded 18 Form 4 filings for THRD: 4 buys ($16.2M) and 14 sells ($15.7M). Over the full record that is net buying of $512.7K.
How many insiders trade THRD stock?
8 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Third Harmonic Bio, Inc.. The most recent filing was accepted on Nov 12, 2024.
Where does Trabud get THRD insider trading data?
All THRD insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.