PROTOPAPAS ANNA (President & CEO) sold 7.4% of their position (11.53K shares) of MERSANA THERAPEUTICS, INC. on the open market
Open‑market sale worth $7.6K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 1/15/2025ACC: 0001104659-25-003881
DirectorOfficer· President & CEO
Since Jan 2019
-11.53K
Net shares
Net seller
$7.6K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
31.25K acquired · 42.78K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+31.25K
Price / share
—
Trade value
—
% of position
25.0%
1/13/2025
125.15K→156.40K
Common Stock
Direct
Shares
−11.53K
Price / share
$0.66
Trade value
$7.61K
% of position
7.4%
1/14/2025
156.40K→144.87K
Total
Net shares
+19.72K
Net value
-$7.61K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 1/13/2025 | M · Option Exercise | +31.25K | — | — | 25.0% | 125.15K | 156.40K |
| Common Stock Direct | 1/14/2025 | S · Sale | −11.53K | $0.66 | $7.61K | 7.4% | 156.40K | 144.87K |
| Total | +19.72K | -$7.61K | ||||||
Derivative Transactions1
Restricted Stock Unit
Direct
Converts to
Common Stock
31.25K shares
Shares
−31.25K
Strike price
Held after
62.50K
Exercisable
—
1/13/2025
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Restricted Stock Unit Direct | Common Stock31.25K shares | 1/13/2025 | M · Option Exercise | −31.25K | — | 62.50K |
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