Bala Mohan, SVP and Chief Development Officer at Mersana Therapeutics ($MRSN), made one open market sale of company shares in the last year, totaling $762.30. His most recent transaction occurred on October 27, 2025. Among 11,678 insiders with sales, Bala Mohan's activity ranks 11,559th by value, well below the average of $8.6 million across 6.37 transactions per insider. He reported no open market purchases.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 7734 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.15% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | U | Common Stock | 2927 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.06% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 2646 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.05% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 1853 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.04% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 3515 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.07% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Restricted Stock Units | 2500 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.05% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Restricted Stock Units | 1750 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.04% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Restricted Stock Units | 700 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 9309 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.19% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 1190 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.02% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 5246 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.10% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development | D | Stock Option (right to buy) | 1053 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.02% |
| Oct. 25, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Restricted Stock Unit | 250 | $0.00 | 0.0000 | 124,631,339 | 100.00% | 0.00% |
| Oct. 27, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | S | Common Stock | 77 | $9.90 | 2,922.0000 | 124,631,339 | 2.57% | 0.00% |
| Oct. 25, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Common Stock | 250 | $0.00 | 2,999.0000 | 124,631,339 | 9.09% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Common Stock | 14583 | $0.00 | 74,811.0000 | 0 | 24.21% | 0.00% |
| Jan. 16, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | S | Common Stock | 5939 | $0.58 | 68,872.0000 | 0 | 7.94% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Restricted Stock Unit | 14583 | $0.00 | 43,750.0000 | 0 | 25.00% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | A | Stock Option (Right to Buy) | 281250 | $0.00 | 281,250.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | A | Restricted Stock Unit | 62500 | $0.00 | 62,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 14, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | S | Common Stock | 3253 | $0.66 | 60,228.0000 | 0 | 5.12% | 0.00% |
| Jan. 13, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Restricted Stock Unit | 8750 | $0.00 | 17,500.0000 | 0 | 33.33% | 0.00% |
| Jan. 13, 2025 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Common Stock | 8750 | $0.00 | 63,481.0000 | 0 | 15.99% | 0.00% |
| Oct. 28, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | S | Common Stock | 1884 | $1.90 | 54,731.0000 | 0 | 3.33% | 0.00% |
| Oct. 25, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Restricted Stock Unit | 6250 | $0.00 | 6,250.0000 | 0 | 50.00% | 0.00% |
| Oct. 25, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Common Stock | 6250 | $0.00 | 56,615.0000 | 0 | 12.41% | 0.00% |
| Oct. 2, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | S | Common Stock | 8089 | $2.00 | 55,963.0000 | 0 | 12.63% | 0.00% |
| Oct. 1, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Restricted Stock Unit | 50000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Oct. 3, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | S | Common Stock | 5598 | $1.96 | 50,365.0000 | 0 | 10.00% | 0.00% |
| Oct. 1, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Common Stock | 50000 | $0.00 | 64,052.0000 | 0 | 355.82% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | A | Restricted Stock Unit | 58333 | $0.00 | 58,333.0000 | 0 | 9999.99% | 0.00% |
| Jan. 13, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Common Stock | 8750 | $0.00 | 17,483.0000 | 0 | 100.19% | 0.00% |
| Jan. 16, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | S | Common Stock | 3431 | $2.71 | 14,052.0000 | 0 | 19.62% | 0.00% |
| Jan. 13, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | M | Restricted Stock Unit | 8750 | $0.00 | 26,250.0000 | 0 | 25.00% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | Bala Mohan | SVP, Chief Development Officer | A | Stock Option (Right to Buy) | 262500 | $0.00 | 262,500.0000 | 0 | 9999.99% | 0.00% |