Insider · CIK 0001991787
Mohan Bala
officer
Files at MRSN (Mersana Therapeutics, Inc.). First filing Oct 29, 2024, latest Oct 28, 2025.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 4
$0 bought, $9,934 sold
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 0Weak | Mersana Therapeutics, Inc. | $762 77 shares | -3% | - | |
| 0Weak | Mersana Therapeutics, Inc. | $3,445 5,939 shares | -8% | - | |
| 0Weak | Mersana Therapeutics, Inc. | $2,147 3,253 shares | -5% | - | |
| 0Weak | Mersana Therapeutics, Inc. | $3,580 1,884 shares | -3% | - |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Oct 25, 2025 | MRSN Mersana Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +250 | $0.00 | $0 | 2,999 | Oct 28, 2025 |
| Oct 27, 2025 | MRSN Mersana Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -77 | $9.90 | $762 | 2,922 | Oct 28, 2025 |
| Oct 25, 2025 | MRSN Mersana Therapeutics, Inc. | MOption exercise Restricted Stock Unitderivative10b5-1 | -250 | $0.00 | $0 | 0 | Oct 28, 2025 |
| Jan 15, 2025 | MRSN Mersana Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +14,583 | $0.00 | $0 | 74,811 | Jan 17, 2025 |
| Jan 16, 2025 | MRSN Mersana Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -5,939 | $0.58 | $3,445 | 68,872 | Jan 17, 2025 |
| Jan 15, 2025 | MRSN Mersana Therapeutics, Inc. | MOption exercise Restricted Stock Unitderivative10b5-1 | -14,583 | $0.00 | $0 | 43,750 | Jan 17, 2025 |
| Jan 15, 2025 | MRSN Mersana Therapeutics, Inc. | AGrant or award Stock Option (Right to Buy)derivative10b5-1 | +281,250 | $0.00 | $0 | 281,250 | Jan 17, 2025 |
| Jan 15, 2025 | MRSN Mersana Therapeutics, Inc. | AGrant or award Restricted Stock Unitderivative10b5-1 | +62,500 | $0.00 | $0 | 62,500 | Jan 17, 2025 |
| Jan 13, 2025 | MRSN Mersana Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +8,750 | $0.00 | $0 | 63,481 | Jan 15, 2025 |
| Jan 14, 2025 | MRSN Mersana Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -3,253 | $0.66 | $2,147 | 60,228 | Jan 15, 2025 |
| Jan 13, 2025 | MRSN Mersana Therapeutics, Inc. | MOption exercise Restricted Stock Unitderivative10b5-1 | -8,750 | $0.00 | $0 | 17,500 | Jan 15, 2025 |
| Oct 25, 2024 | MRSN Mersana Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +6,250 | $0.00 | $0 | 56,615 | Oct 29, 2024 |
| Oct 28, 2024 | MRSN Mersana Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -1,884 | $1.90 | $3,580 | 54,731 | Oct 29, 2024 |
| Oct 25, 2024 | MRSN Mersana Therapeutics, Inc. | MOption exercise Restricted Stock Unitderivative10b5-1 | -6,250 | $0.00 | $0 | 6,250 | Oct 29, 2024 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.