In the last 12 months, insiders at Tourmaline Bio, Inc. ($TRML) filed 84 transactions with the SEC: 3 open-market purchases totaling $3,348,416 and 0 sales totaling $0. Net insider sentiment: net buying.
Tourmaline Bio, Inc. operates in the Biological products, (no disgnostic substances) industry (Life sciences sector).
Most Active Insiders
- MCDADE MARK (Not found) — 8 transactions totaling $3,250,000
- Kulkarni Sandeep Chidambar (CEO) — 11 transactions totaling $298,412
- Robinson Ryan F. (CFO) — 7 transactions totaling $199,975
- KANTOFF AARON (Not found) — 8 transactions totaling $99,526
- SIEGALL CLAY B (Not found) — 3 transactions totaling $0
View all SEC Filings for Tourmaline Bio, Inc. (TRML).
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Oct. 28, 2025 | Kulkarni Sandeep Chidambar | CEO | D | Employee Stock Option (Right to Buy) | 226000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.88% |
| Oct. 28, 2025 | KANTOFF AARON | Not found | D | Employee Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | KANTOFF AARON | Not found | D | Employee Stock Option (Right to Buy) | 16800 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.07% |
| Oct. 28, 2025 | Castelein Caley | Not found | U | Common Stock | 515997 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 2.00% |
| Oct. 28, 2025 | Castelein Caley | Not found | U | Common Stock | 431939 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 1.68% |
| Oct. 28, 2025 | Castelein Caley | Not found | D | Employee Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | Castelein Caley | Not found | D | Employee Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | Castelein Caley | Not found | D | Employee Stock Option (Right to Buy) | 16800 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.07% |
| Oct. 28, 2025 | Johnson Kevin Bruce | Chief Regulatory Officer | U | Common Stock | 40538 | $0.00 | 11,046.0000 | 25,755,000 | 78.59% | 0.16% |
| Oct. 28, 2025 | Johnson Kevin Bruce | Chief Regulatory Officer | D | Common Stock | 11046 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | Johnson Kevin Bruce | Chief Regulatory Officer | D | Employee Stock Option (Right to Buy) | 96146 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.37% |
| Oct. 28, 2025 | Johnson Kevin Bruce | Chief Regulatory Officer | D | Employee Stock Option (Right to Buy) | 46774 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.18% |
| Oct. 28, 2025 | Johnson Kevin Bruce | Chief Regulatory Officer | D | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.23% |
| Oct. 28, 2025 | Jones Susan Dana | Chief Technology Officer | U | Common Stock | 19782 | $0.00 | 3,152.0000 | 25,755,000 | 86.26% | 0.08% |
| Oct. 28, 2025 | Jones Susan Dana | Chief Technology Officer | D | Common Stock | 3152 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.01% |
| Oct. 28, 2025 | Jones Susan Dana | Chief Technology Officer | D | Employee Stock Option (Right to Buy) | 76219 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.30% |
| Oct. 28, 2025 | Jones Susan Dana | Chief Technology Officer | D | Employee Stock Option (Right to Buy) | 46774 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.18% |
| Oct. 28, 2025 | Jones Susan Dana | Chief Technology Officer | D | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.23% |
| Oct. 28, 2025 | MIDDLEKAUFF W BRADFORD | CBO, GC and Secretary | U | Common Stock | 60988 | $0.00 | 8,213.0000 | 25,755,000 | 88.13% | 0.24% |
| Oct. 28, 2025 | MIDDLEKAUFF W BRADFORD | CBO, GC and Secretary | D | Common Stock | 8213 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.03% |
| Oct. 28, 2025 | MIDDLEKAUFF W BRADFORD | CBO, GC and Secretary | D | Employee Stock Option (Right to Buy) | 124991 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.49% |
| Oct. 28, 2025 | MIDDLEKAUFF W BRADFORD | CBO, GC and Secretary | D | Employee Stock Option (Right to Buy) | 46774 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.18% |
| Oct. 28, 2025 | MIDDLEKAUFF W BRADFORD | CBO, GC and Secretary | D | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.23% |
| Oct. 28, 2025 | Robinson Ryan F. | CFO | U | Common Stock | 14366 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.06% |
| Oct. 28, 2025 | Robinson Ryan F. | CFO | D | Employee Stock Option (Right to Buy) | 25845 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.10% |
| Oct. 28, 2025 | Robinson Ryan F. | CFO | D | Employee Stock Option (Right to Buy) | 16000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.06% |
| Oct. 28, 2025 | Robinson Ryan F. | CFO | D | Employee Stock Option (Right to Buy) | 76400 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.30% |
| Oct. 28, 2025 | Robinson Ryan F. | CFO | D | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.23% |
| Oct. 28, 2025 | Kulkarni Sandeep Chidambar | CEO | U | Common Stock | 724664 | $0.00 | 30,387.0000 | 25,755,000 | 95.98% | 2.81% |
| Oct. 28, 2025 | Kulkarni Sandeep Chidambar | CEO | D | Common Stock | 30387 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.12% |
| Oct. 28, 2025 | Kulkarni Sandeep Chidambar | CEO | U | Common Stock | 7000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.03% |
| Oct. 28, 2025 | Kulkarni Sandeep Chidambar | CEO | D | Employee Stock Option (Right to Buy) | 503478 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 1.95% |
| Oct. 28, 2025 | Kulkarni Sandeep Chidambar | CEO | D | Employee Stock Option (Right to Buy) | 254207 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.99% |
| Oct. 28, 2025 | SIEGALL CLAY B | Not found | D | Employee Stock Option (Right to Buy) | 20000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.08% |
| Oct. 28, 2025 | SIEGALL CLAY B | Not found | D | Employee Stock Option (Right to Buy) | 15000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.06% |
| Oct. 28, 2025 | SIEGALL CLAY B | Not found | D | Employee Stock Option (Right to Buy) | 16800 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.07% |
| Oct. 28, 2025 | Thiara Parvinder | Not found | U | Common Stock | 83782 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.33% |
| Oct. 28, 2025 | Thiara Parvinder | Not found | D | Employee Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | Thiara Parvinder | Not found | D | Employee Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | Thiara Parvinder | Not found | D | Employee Stock Option (Right to Buy) | 16800 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.07% |
| Oct. 28, 2025 | Srivastava Sapna | Not found | U | Common Stock | 518 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.00% |
| Oct. 28, 2025 | Srivastava Sapna | Not found | D | Employee Stock Option (Right to Buy) | 20000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.08% |
| Oct. 28, 2025 | Srivastava Sapna | Not found | D | Employee Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | Srivastava Sapna | Not found | D | Employee Stock Option (Right to Buy) | 16800 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.07% |
| Oct. 28, 2025 | MCDADE MARK | Not found | U | Common Stock | 518 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.00% |
| Oct. 28, 2025 | MCDADE MARK | Not found | U | Common Stock | 183177 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.71% |
| Oct. 28, 2025 | MCDADE MARK | Not found | U | Common Stock | 110083 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.43% |
| Oct. 28, 2025 | MCDADE MARK | Not found | U | Common Stock | 448431 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 1.74% |
| Oct. 28, 2025 | MCDADE MARK | Not found | D | Employee Stock Option (Right to Buy) | 20000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.08% |
| Oct. 28, 2025 | MCDADE MARK | Not found | D | Employee Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Oct. 28, 2025 | MCDADE MARK | Not found | D | Employee Stock Option (Right to Buy) | 16800 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.07% |
| Oct. 28, 2025 | KANTOFF AARON | Not found | U | Common Stock | 88281 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.34% |
| Oct. 22, 2025 | Kulkarni Sandeep Chidambar | CEO | M | Employee Stock Option (Right to Buy) | 25316 | $0.00 | 503,478.0000 | 25,755,000 | 4.79% | 0.10% |
| Oct. 24, 2025 | KANTOFF AARON | Not found | G | Common Stock | 5000 | $0.00 | 88,281.0000 | 25,755,000 | 5.36% | 0.02% |
| Oct. 22, 2025 | Robinson Ryan F. | CFO | M | Common Stock | 14366 | $13.92 | 14,366.0000 | 25,755,000 | 9999.99% | 0.06% |
| Oct. 22, 2025 | Robinson Ryan F. | CFO | M | Employee Stock Option (Right to Buy) | 14366 | $0.00 | 25,845.0000 | 25,755,000 | 35.73% | 0.06% |
| Oct. 22, 2025 | Kulkarni Sandeep Chidambar | CEO | M | Common Stock | 25316 | $7.90 | 762,051.0000 | 25,755,000 | 3.44% | 0.10% |
| Oct. 15, 2025 | Johnson Kevin Bruce | Chief Regulatory Officer | G | Common Stock | 6250 | $0.00 | 51,584.0000 | 25,755,000 | 10.81% | 0.02% |
| Oct. 15, 2025 | Castelein Caley | Not found | G | Common Stock | 522 | $0.00 | 947,936.0000 | 25,755,000 | 0.06% | 0.00% |
| Sept. 5, 2025 | KANTOFF AARON | Not found | M | Common Stock | 10000 | $9.46 | 93,281.0000 | 25,755,000 | 12.01% | 0.04% |
| Sept. 5, 2025 | KANTOFF AARON | Not found | M | Stock Option (Right to Buy) | 37890 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.15% |
| Sept. 5, 2025 | KANTOFF AARON | Not found | M | Stock Option (Right to Buy) | 10000 | $0.00 | 0.0000 | 25,755,000 | 100.00% | 0.04% |
| Sept. 5, 2025 | KANTOFF AARON | Not found | M | Common Stock | 37890 | $0.13 | 83,281.0000 | 25,755,000 | 83.47% | 0.15% |
| June 4, 2025 | Thiara Parvinder | Director | A | Stock Option (Right to Buy) | 16800 | $0.00 | 16,800.0000 | 25,348,000 | 9999.99% | 0.07% |
| June 4, 2025 | Srivastava Sapna | Director | A | Stock Option (Right to Buy) | 16800 | $0.00 | 16,800.0000 | 25,348,000 | 9999.99% | 0.07% |
| June 4, 2025 | SIEGALL CLAY B | Director | A | Stock Option (Right to Buy) | 16800 | $0.00 | 16,800.0000 | 25,348,000 | 9999.99% | 0.07% |
| June 4, 2025 | Castelein Caley | Director | A | Stock Option (Right to Buy) | 16800 | $0.00 | 16,800.0000 | 25,348,000 | 9999.99% | 0.07% |
| June 4, 2025 | MCDADE MARK | Director | A | Stock Option (Right to Buy) | 16800 | $0.00 | 16,800.0000 | 25,348,000 | 9999.99% | 0.07% |
| June 4, 2025 | KANTOFF AARON | Director | A | Stock Option (Right to Buy) | 16800 | $0.00 | 16,800.0000 | 25,348,000 | 9999.99% | 0.07% |
| Feb. 3, 2025 | Kulkarni Sandeep Chidambar | CEO | A | Employee Stock Option (Right to Buy) | 226000 | $0.00 | 226,000.0000 | 25,348,000 | 9999.99% | 0.89% |
| Jan. 27, 2025 | Johnson Kevin Bruce | Chief Regulatory Officer | A | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 58,000.0000 | 25,348,000 | 9999.99% | 0.23% |
| Jan. 27, 2025 | Jones Susan Dana | Chief Technology Officer | A | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 58,000.0000 | 25,348,000 | 9999.99% | 0.23% |
| Jan. 27, 2025 | MIDDLEKAUFF W BRADFORD | CBO, GC and Secretary | A | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 58,000.0000 | 25,348,000 | 9999.99% | 0.23% |
| Jan. 27, 2025 | Robinson Ryan F. | Chief Financial Officer | A | Employee Stock Option (Right to Buy) | 58000 | $0.00 | 58,000.0000 | 25,348,000 | 9999.99% | 0.23% |
| Aug. 21, 2024 | Kulkarni Sandeep Chidambar | CEO | P | Common Stock | 1779 | $14.85 | 7,000.0000 | 25,724,000 | 34.07% | 0.01% |
| Aug. 16, 2024 | Kulkarni Sandeep Chidambar | CEO | P | Common Stock | 5221 | $13.79 | 5,221.0000 | 25,724,000 | 9999.99% | 0.02% |
| June 25, 2024 | Robinson Ryan F. | Chief Financial Officer | A | Employee Stock Option (Right to Buy) | 76400 | $0.00 | 76,400.0000 | 4,747,000 | 9999.99% | 1.61% |
| June 5, 2024 | Srivastava Sapna | Director | A | Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 4,747,000 | 9999.99% | 0.21% |
| June 5, 2024 | Castelein Caley | Director | A | Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 4,747,000 | 9999.99% | 0.21% |
| June 5, 2024 | KANTOFF AARON | Director | A | Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 4,747,000 | 9999.99% | 0.21% |
| June 5, 2024 | MCDADE MARK | Director | A | Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 4,747,000 | 9999.99% | 0.21% |
| June 5, 2024 | SIEGALL CLAY B | Director | A | Stock Option (Right to Buy) | 15000 | $0.00 | 15,000.0000 | 4,747,000 | 9999.99% | 0.32% |
| June 5, 2024 | Thiara Parvinder | Director | A | Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 4,747,000 | 9999.99% | 0.21% |
| Jan. 29, 2024 | MCDADE MARK | Not found | P | Common Stock | 100000 | $32.50 | 742,209.0000 | 4,747,000 | 15.57% | 2.11% |