THRD
insider transactionsThird Harmonic Bio, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
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Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Other·J
Director
$0
83.3K sh
-
Other·J
Director
—
128.6K sh
-
Other·J
Chief Financial & Bus. Officer
$0
47.5K sh
-
Other·J
Director
$0
120.2K sh
-
Other·J
CEO
$0
50.0K sh
-
Other·J
CEO
$0
998.9K sh
-
Other·J
CEO
—
1.2M sh
-
Other·J
Director
$0
53.1K sh
-
Other·J
Director
—
85.8K sh
-
Other·J
Director
$0
43.6K sh
-
Other·J
Director
—
5.8M sh
-
Other·J
Director,TenPercentOwner
$0
43.6K sh
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Aug 11, 2025 | Iwicki Mark T | Other J | 83.3K | $0 |
| Aug 11, 2025 | Iwicki Mark T | Other J | 128.6K | — |
| Aug 11, 2025 | Murphy Christopher M. KEY | Other J | 47.5K | $0 |
| Aug 11, 2025 | Soloway Thomas P | Other J | 120.2K | $0 |
| Aug 11, 2025 | Holles Natalie C. KEY | Other J | 50.0K | $0 |
| Aug 11, 2025 | Holles Natalie C. KEY | Other J | 998.9K | $0 |
| Aug 11, 2025 | Holles Natalie C. KEY | Other J | 1.2M | — |
| Aug 11, 2025 | Seidel Hans Martin | Other J | 53.1K | $0 |
| Aug 11, 2025 | Seidel Hans Martin | Other J | 85.8K | — |
| Aug 11, 2025 | Unknown | Other J | 43.6K | $0 |
| Aug 11, 2025 | Unknown | Other J | 5.8M | — |
| Aug 11, 2025 | Gladstone Michael | Other J | 43.6K | $0 |
About THRD insider trading
This page tracks insider transactions for Third Harmonic Bio, Inc. (THRD) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.