In the last 12 months, insiders at Third Harmonic Bio, Inc. ($THRD) filed 84 transactions with the SEC: 0 open-market purchases totaling $0 and 15 sales totaling $15,486,233. Net insider sentiment: net selling.
Third Harmonic Bio, Inc. operates in the Pharmaceutical preparations industry (Life sciences sector).
Most Active Insiders
- BVF PARTNERS L P/IL (Other) — 3 transactions totaling $14,300,000
- Holles Natalie C. (CEO) — 13 transactions totaling $553,390
- Dittman Jennifer (Chief Development Oper Officer) — 12 transactions totaling $459,903
- Person Julie (CHIEF ADMINISTRATIVE OFFICER) — 14 transactions totaling $367,015
- Conner Edward R. (Chief Medical Officer) — 12 transactions totaling $183,936
View all SEC Filings for Third Harmonic Bio, Inc. (THRD).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug. 11, 2025 | Holles Natalie C. | CEO | J | Stock Option | 998854 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 2.21% |
| Aug. 11, 2025 | Holles Natalie C. | CEO | J | Restricted Stock Unit | 50000 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.11% |
| Aug. 11, 2025 | Gladstone Michael | Not found | J | Stock Option | 43584 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.10% |
| Aug. 11, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | J | Restricted Stock Unit | 47500 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.11% |
| Aug. 11, 2025 | Iwicki Mark T | Not found | J | Common Stock | 128631 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.29% |
| Aug. 11, 2025 | Holles Natalie C. | CEO | J | Common Stock | 1218836 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 2.70% |
| Aug. 11, 2025 | Iwicki Mark T | Not found | J | Stock Option | 83296 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.18% |
| Aug. 11, 2025 | Seidel Hans Martin | Not found | J | Common Stock | 85753 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.19% |
| Aug. 11, 2025 | Seidel Hans Martin | Not found | J | Stock Option | 53090 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.12% |
| Aug. 11, 2025 | Soloway Thomas P | Not found | J | Stock Option | 120166 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.27% |
| Aug. 11, 2025 | Bonita David P | Not found | J | Common Stock | 5779071 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 12.81% |
| Aug. 11, 2025 | Bonita David P | Not found | J | Stock Option | 43584 | $0.00 | 0.0000 | 45,127,797 | 100.00% | 0.10% |
| March 1, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | A | Restricted Stock Unit | 30000 | $0.00 | 30,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | A | Employee Stock Option (right to buy) | 140000 | $0.00 | 140,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | A | Restricted Stock Unit | 17500 | $0.00 | 17,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Dittman Jennifer | Chief Operating Officer | A | Employee Stock Option (right to buy) | 92000 | $0.00 | 92,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Dittman Jennifer | Chief Operating Officer | A | Restricted Stock Unit | 11500 | $0.00 | 11,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Conner Edward R. | Chief Medical Officer | A | Employee Stock Option (right to buy) | 132000 | $0.00 | 132,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Conner Edward R. | Chief Medical Officer | A | Restricted Stock Unit | 16500 | $0.00 | 16,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | A | Employee Stock Option (right to buy) | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | A | Restricted Stock Unit | 12500 | $0.00 | 12,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Dinsmore Christopher | Chief Scientific Officer | A | Employee Stock Option (right to buy) | 116000 | $0.00 | 116,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Dinsmore Christopher | Chief Scientific Officer | A | Restricted Stock Unit | 14500 | $0.00 | 14,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Dean Dennis | Chief Nonclinical Dev. Officer | A | Employee Stock Option (right to buy) | 92000 | $0.00 | 92,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Dean Dennis | Chief Nonclinical Dev. Officer | A | Restricted Stock Unit | 11500 | $0.00 | 11,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Holles Natalie C. | CEO | A | Employee Stock Option (right to buy) | 400000 | $0.00 | 400,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Holles Natalie C. | CEO | A | Restricted Stock Unit | 50000 | $0.00 | 50,000.0000 | 0 | 9999.99% | 0.00% |
| Nov. 8, 2024 | Conner Edward R. | Chief Medical Officer | M | Common Stock | 2117 | $4.20 | 2,117.0000 | 0 | 9999.99% | 0.00% |
| Nov. 8, 2024 | Conner Edward R. | Chief Medical Officer | S | Common Stock | 2117 | $15.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Nov. 8, 2024 | Conner Edward R. | Chief Medical Officer | M | Employee Option Grant (right to buy) | 2117 | $0.00 | 368,918.0000 | 0 | 0.57% | 0.00% |
| Nov. 1, 2024 | Atlas Venture Fund XI, L.P. | Not found | J | Common Stock | 515688 | $0.00 | 9,798,075.0000 | 0 | 5.00% | 0.00% |
| Oct. 29, 2024 | BVF PARTNERS L P/IL | Other | S | Common Stock | 538420 | $14.30 | 1,794,218.0000 | 0 | 23.08% | 0.00% |
| Oct. 29, 2024 | BVF PARTNERS L P/IL | Other | S | Common Stock | 396963 | $14.30 | 1,367,257.0000 | 0 | 22.50% | 0.00% |
| Oct. 29, 2024 | BVF PARTNERS L P/IL | Other | S | Common Stock | 64617 | $14.30 | 176,692.0000 | 0 | 26.78% | 0.00% |
| Oct. 28, 2024 | Conner Edward R. | Chief Medical Officer | M | Common Stock | 2673 | $4.20 | 2,673.0000 | 0 | 9999.99% | 0.00% |
| Oct. 28, 2024 | Conner Edward R. | Chief Medical Officer | S | Common Stock | 2673 | $15.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Oct. 28, 2024 | Conner Edward R. | Chief Medical Officer | M | Employee Option Grant (right to buy) | 2673 | $0.00 | 371,035.0000 | 0 | 0.72% | 0.00% |
| Sept. 19, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Common Stock | 9497 | $4.20 | 9,497.0000 | 0 | 50.00% | 0.00% |
| Sept. 19, 2024 | Conner Edward R. | Chief Medical Officer | M | Common Stock | 4790 | $4.20 | 4,790.0000 | 0 | 9999.99% | 0.00% |
| Sept. 19, 2024 | Conner Edward R. | Chief Medical Officer | S | Common Stock | 4790 | $15.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 19, 2024 | Conner Edward R. | Chief Medical Officer | M | Employee Option Grant (right to buy) | 4790 | $0.00 | 373,708.0000 | 0 | 1.27% | 0.00% |
| Sept. 18, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Common Stock | 503 | $4.20 | 503.0000 | 0 | 9999.99% | 0.00% |
| Sept. 18, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | S | Common Stock | 503 | $14.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 19, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | S | Common Stock | 9497 | $14.29 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 18, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Employee Option Grant (right to buy) | 503 | $0.00 | 165,459.0000 | 0 | 0.30% | 0.00% |
| Sept. 19, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Employee Option Grant (right to buy) | 9497 | $0.00 | 155,962.0000 | 0 | 5.74% | 0.00% |
| June 26, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | S | Common Stock | 10000 | $12.46 | 0.0000 | 0 | 100.00% | 0.00% |
| June 26, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Common Stock | 10000 | $4.20 | 10,000.0000 | 0 | 9999.99% | 0.00% |
| May 16, 2024 | Dinsmore Christopher | Chief Scientific Officer | A | Employee Stock Option (right to buy) | 297000 | $0.00 | 297,000.0000 | 0 | 9999.99% | 0.00% |
| June 26, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Employee Option Grant (right to buy) | 10000 | $0.00 | 165,962.0000 | 0 | 5.68% | 0.00% |
| June 7, 2024 | Dittman Jennifer | Chief Development Oper Officer | M | Employee Stock Option (right to buy) | 494 | $0.00 | 16,294.0000 | 0 | 2.94% | 0.00% |
| June 6, 2024 | Seidel Hans Martin | Not found | A | Director Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| June 7, 2024 | Dittman Jennifer | Chief Development Oper Officer | A | Common Stock | 494 | $4.20 | 494.0000 | 0 | 50.00% | 0.00% |
| June 7, 2024 | Dittman Jennifer | Chief Development Oper Officer | S | Common Stock | 494 | $14.17 | 0.0000 | 0 | 100.00% | 0.00% |
| June 6, 2024 | Iwicki Mark T | Not found | A | Director Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| June 6, 2024 | Soloway Thomas P | Not found | A | Director Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| June 6, 2024 | Gladstone Michael | Not found | A | Director Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| June 6, 2024 | Bonita David P | Not found | A | Director Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 20, 2024 | Dittman Jennifer | Chief Development Oper Officer | S | Common Stock | 1042 | $14.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 20, 2024 | Dittman Jennifer | Chief Development Oper Officer | M | Employee Stock Option (right to buy) | 1042 | $0.00 | 32,292.0000 | 0 | 3.13% | 0.00% |
| May 20, 2024 | Dittman Jennifer | Chief Development Oper Officer | A | Common Stock | 1042 | $4.30 | 1,042.0000 | 0 | 50.00% | 0.00% |
| May 16, 2024 | Dinsmore Christopher | Chief Scientific Officer | A | Employee Stock Option (right to buy) | 210000 | $0.00 | 210,000.0000 | 0 | 9999.99% | 0.00% |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | A | Common Stock | 16666 | $4.30 | 16,666.0000 | 0 | 9999.99% | 0.00% |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | A | Common Stock | 6912 | $4.20 | 23,578.0000 | 0 | 41.47% | 0.00% |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | S | Common Stock | 23578 | $14.04 | 0.0000 | 0 | 100.00% | 0.00% |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | A | Employee Stock Option (right to buy) | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | M | Employee Stock Option (right to buy) | 16666 | $0.00 | 33,334.0000 | 0 | 33.33% | 0.00% |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | M | Employee Stock Option (right to buy) | 6912 | $0.00 | 16,788.0000 | 0 | 29.16% | 0.00% |
| May 16, 2024 | Dean Dennis | Chief Nonclinical Dev. Officer | A | Employee Stock Option (right to buy) | 210000 | $0.00 | 210,000.0000 | 0 | 9999.99% | 0.00% |
| May 9, 2024 | Holles Natalie C. | CEO | M | Employee Stock Option (right to buy) | 20222 | $0.00 | 433,854.0000 | 0 | 4.45% | 0.00% |
| May 9, 2024 | Holles Natalie C. | CEO | S | Common Stock | 20222 | $12.18 | 1,218,836.0000 | 0 | 1.63% | 0.00% |
| May 9, 2024 | Holles Natalie C. | CEO | M | Common Stock | 20222 | $4.20 | 1,239,058.0000 | 0 | 1.66% | 0.00% |
| April 11, 2024 | Holles Natalie C. | CEO | M | Employee Stock Option (right to buy) | 13558 | $0.00 | 454,076.0000 | 0 | 2.90% | 0.00% |
| April 11, 2024 | Holles Natalie C. | CEO | M | Common Stock | 13558 | $4.20 | 1,232,394.0000 | 0 | 1.11% | 0.00% |
| April 11, 2024 | Holles Natalie C. | CEO | S | Common Stock | 13558 | $12.19 | 1,218,836.0000 | 0 | 1.10% | 0.00% |
| April 4, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Employee Option Grant (right to buy) | 1107 | $0.00 | 175,962.0000 | 0 | 0.63% | 0.00% |
| April 4, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | M | Common Stock | 1107 | $4.20 | 1,107.0000 | 0 | 9999.99% | 0.00% |
| April 4, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | S | Common Stock | 1107 | $10.00 | 0.0000 | 0 | 100.00% | 0.00% |
| March 27, 2024 | MCDONOUGH GEOFF | Not found | A | Stock Option (Right to Buy) | 60000 | $0.00 | 60,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 5, 2024 | Person Julie | Chief Administrative Officer | A | Employee Option Grant (right to buy) | 116000 | $0.00 | 116,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 5, 2024 | Conner Edward R. | Chief Medical Officer | A | Employee Option Grant (right to buy) | 133000 | $0.00 | 133,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 5, 2024 | Murphy Christopher M. | Chief Financial & Bus. Officer | A | Employee Option Grant (right to buy) | 410000 | $0.00 | 410,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 5, 2024 | Holles Natalie C. | CEO | A | Employee Option Grant (right to buy) | 396000 | $0.00 | 396,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 5, 2024 | Holles Natalie C. | CEO | A | Employee Option Grant (right to buy) | 396000 | $0.00 | 396,000.0000 | 0 | 9999.99% | 0.00% |