PROTOPAPAS ANNA (President & CEO) sold 3.8% of their position (6.19K shares) of MERSANA THERAPEUTICS, INC. on the open market
Open‑market sale worth $3.9K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 1/16/2025ACC: 0001104659-25-004187
DirectorOfficer· President & CEO
Since Jan 2019
-6.19K
Net shares
Net seller
$3.9K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
16.75K acquired · 22.94K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+16.75K
Price / share
—
Trade value
—
% of position
11.6%
1/14/2025
144.87K→161.62K
Common Stock
Direct
Shares
−6.19K
Price / share
$0.63
Trade value
$3.90K
% of position
3.8%
1/15/2025
161.62K→155.43K
Total
Net shares
+10.56K
Net value
-$3.90K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 1/14/2025 | M · Option Exercise | +16.75K | — | — | 11.6% | 144.87K | 161.62K |
| Common Stock Direct | 1/15/2025 | S · Sale | −6.19K | $0.63 | $3.90K | 3.8% | 161.62K | 155.43K |
| Total | +10.56K | -$3.90K | ||||||
Derivative Transactions1
Restricted Stock Unit
Direct
Converts to
Common Stock
16.75K shares
Shares
−16.75K
Strike price
Held after
16.75K
Exercisable
—
1/14/2025
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Restricted Stock Unit Direct | Common Stock16.75K shares | 1/14/2025 | M · Option Exercise | −16.75K | — | 16.75K |
Non-Derivative Holdings (Post-Transaction)2
Common Stock
IndirectShares owned240.24K
Common Stock
IndirectShares owned72.26K
Total
312.51K indirect312.51K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 240.24K | Indirect |
| Common Stock | 72.26K | Indirect |
| Total | 312.51K | 312.51K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported