Third Harmonic Bio, Inc.
Total Trades
23
Buys
4
Sells
10
Largest Trade
$1M+
Insiders
8
Institutional Funds
4
Inst. Value
$100K–$500K
Activist Filings
28
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Conner Edward R. | Chief Medical Offi… | SELL | $15K–$50K | 2K | $15.00 | Nov 12, 2024 |
| Conner Edward R. | Chief Medical Offi… | EXERCISE | $1K–$15K | 2K | $4.20 | Nov 12, 2024 |
| BVF PARTNERS L P/IL | Insider | SELL | $1M+ | 1.0M | $14.30 | Oct 31, 2024 |
| Conner Edward R. | Chief Medical Offi… | SELL | $15K–$50K | 3K | $15.00 | Oct 30, 2024 |
| Conner Edward R. | Chief Medical Offi… | EXERCISE | $1K–$15K | 3K | $4.20 | Oct 30, 2024 |
| Conner Edward R. | Chief Medical Offi… | SELL | $50K–$100K | 5K | $15.00 | Sep 20, 2024 |
| Conner Edward R. | Chief Medical Offi… | EXERCISE | $15K–$50K | 5K | $4.20 | Sep 20, 2024 |
| Person Julie | CHIEF ADMINISTRATI… | EXERCISE | $15K–$50K | 10K | $4.20 | Sep 20, 2024 |
| Person Julie | CHIEF ADMINISTRATI… | SELL | $100K–$500K | 10K | $14.27 | Sep 20, 2024 |
| Person Julie | CHIEF ADMINISTRATI… | SELL | $100K–$500K | 10K | $12.46 | Jun 28, 2024 |
| Person Julie | CHIEF ADMINISTRATI… | EXERCISE | $15K–$50K | 10K | $4.20 | Jun 28, 2024 |
| Dittman Jennifer | Chief Development … | GRANT | $1K–$15K | 494 | $4.20 | Jun 10, 2024 |
| Dittman Jennifer | Chief Development … | SELL | $1K–$15K | 494 | $14.17 | Jun 10, 2024 |
| Dittman Jennifer | Chief Development … | GRANT | $1K–$15K | 1K | $4.30 | May 22, 2024 |
| Dittman Jennifer | Chief Development … | SELL | $1K–$15K | 1K | $14.00 | May 22, 2024 |
| Holles Natalie C. | CEO | EXERCISE | $50K–$100K | 14K | $4.20 | Apr 15, 2024 |
| Holles Natalie C. | CEO | SELL | $100K–$500K | 14K | $12.19 | Apr 15, 2024 |
| Person Julie | CHIEF ADMINISTRATI… | EXERCISE | $1K–$15K | 1K | $4.20 | Apr 8, 2024 |
| Person Julie | CHIEF ADMINISTRATI… | SELL | $1K–$15K | 1K | $10.00 | Apr 8, 2024 |
| BVF PARTNERS L P/IL | 10% Owner | BUY | $500K+ | 214K | $4.11 | Dec 22, 2022 |
| ORBIMED ADVISORS LLC | Director | BUY | $1M+ | 300K | $17.00 | Sep 21, 2022 |
| Bonita David P | Director | BUY | $1M+ | 300K | $17.00 | Sep 21, 2022 |
| Atlas Venture Fund XI, L.P. | 10% Owner | BUY | $1M+ | 300K | $17.00 | Sep 19, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 4 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| RHUMBLINE ADVISERS | 20K | $100K–$500K | SH |
| GAMMA Investing LLC | 458 | $1K–$15K | SH |
| SBI Securities Co., Ltd. | 20 | <$1K | SH |
| CALDWELL SUTTER CAPITAL, INC. | 1K | N/A | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Nantahala Capital Management, LLC
SC 13G/A · Nov 14, 2025
0.0%
0 shares
Nantahala Capital Management, LLC
SC 13G · May 15, 2025
6.5%
2.9M shares
SC 13G/A · May 15, 2025
0.0%
0 shares
SC 13G/A · May 12, 2025
0.0%
1K shares
SC 13G/A · Apr 16, 2025
0.0%
0 shares
SC 13G · Feb 14, 2025
8.2%
3.7M shares
SC 13D/A · Feb 14, 2025
0.0%
0 shares
SC 13G · Feb 12, 2025
5.6%
2.5M shares
SC 13D/A · Jan 22, 2025
8.0%
3.6M shares
SC 13G/A · Nov 14, 2024
3.1%
1.3M shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G · Nov 14, 2024
6.9%
2.8M shares
SC 13D/A · Nov 12, 2024
12.8%
5.8M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Nov 12, 2024
2.8%
1.3M shares
SC 13D/A · Nov 5, 2024
23.8%
9.8M shares
SC 13G · Sep 27, 2024
5.9%
2.4M shares
SC 13G/A · Feb 14, 2024
7.9%
3.2M shares
Stonepine Capital Management, LLC
SC 13G/A · Feb 13, 2024
0.0%
0 shares
SC 13G · Nov 27, 2023
5.0%
2.0M shares
SC 13G · Sep 13, 2023
7.4%
3.0M shares
SC 13G/A · Feb 14, 2023
1.3%
535K shares
Bain Capital Life Sciences Opportunities III, LP
SC 13G/A · Feb 14, 2023
2.8%
1.2M shares
Stonepine Capital Management, LLC
SC 13G · Jan 18, 2023
5.3%
2.2M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Dec 21, 2022
5.8%
2.3M shares
Bain Capital Life Sciences Opportunities III, LP
SC 13G · Sep 29, 2022
5.7%
2.3M shares
SC 13D · Sep 29, 2022
25.6%
10.3M shares
SC 13D · Sep 28, 2022
14.3%
5.8M shares
SC 13D · Sep 28, 2022
7.3%
3.0M shares
Biotechnology Value Fund, L.P.
SC 13G · Sep 26, 2022
4.8%
1.9M shares