SULLIVAN MARK

PrivateCIK: 1331843
Location

MOUNT LAUREL, NJ

SULLIVAN MARK (Chief Legal Officer) sold 3.8% of their position (10.70K shares) of DEFINIUM THERAPEUTICS, INC. on the open market

Open‑market sale worth $197.7K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderSULLIVAN MARKCIK 1331843
Officer· Chief Legal Officer
Since Feb 2026
-10.70K
Net shares
Net seller
$197.7K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
10.70K disposed
Non-Derivative Transactions1

Common Shares

Direct
S · Sale

Shares

10.70K

Price / share

$18.47

Trade value

$197.67K

% of position

3.8%
3/25/2026
281.78K271.08K
Total

Net shares

10.70K

Net value

-$197.67K

Derivative Transactions0
No derivative transactions reported
SULLIVAN MARK — Insider Transaction (Form 4) Filed Mar 26, 2026 | Finecho