PROTOPAPAS ANNA (President & CEO) sold 4.9% of their position (8.64K shares) of MERSANA THERAPEUTICS, INC. on the open market
Open‑market sale worth $5.0K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 1/17/2025ACC: 0001104659-25-004596
DirectorOfficer· President & CEO
Since Jan 2019
-8.64K
Net shares
Net seller
$5.0K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
21.25K acquired · 29.89K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+21.25K
Price / share
—
Trade value
—
% of position
13.7%
1/15/2025
155.43K→176.68K
Common Stock
Direct
Shares
−8.64K
Price / share
$0.58
Trade value
$5.01K
% of position
4.9%
1/16/2025
176.68K→168.04K
Total
Net shares
+12.61K
Net value
-$5.01K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 1/15/2025 | M · Option Exercise | +21.25K | — | — | 13.7% | 155.43K | 176.68K |
| Common Stock Direct | 1/16/2025 | S · Sale | −8.64K | $0.58 | $5.01K | 4.9% | 176.68K | 168.04K |
| Total | +12.61K | -$5.01K | ||||||
Derivative Transactions1
Restricted Stock Unit
Direct
Converts to
Common Stock
21.25K shares
Shares
−21.25K
Strike price
Held after
0.00
Exercisable
—
1/15/2025
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Restricted Stock Unit Direct | Common Stock21.25K shares | 1/15/2025 | M · Option Exercise | −21.25K | — | 0.00 |
Non-Derivative Holdings (Post-Transaction)2
Common Stock
IndirectShares owned72.26K
Common Stock
IndirectShares owned240.24K
Total
312.51K indirect312.51K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 72.26K | Indirect |
| Common Stock | 240.24K | Indirect |
| Total | 312.51K | 312.51K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported