SULLIVAN MARK

PrivateCIK: 1331843
Location

MOUNT LAUREL, NJ

SULLIVAN MARK (Chief Legal Officer) sold 3.7% of their position (11.28K shares) of DEFINIUM THERAPEUTICS, INC. on the open market

Open‑market sale worth $110.2K — 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
-11.28K
Net shares
Net seller
$110.2K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
11.28K disposed
Non-Derivative Transactions1

Common Shares

Direct
S · Sale

Shares

11.28K

Price / share

$9.77

Trade value

$110.19K

% of position

3.7%
9/25/2025
305.13K293.85K
Total

Net shares

11.28K

Net value

-$110.19K

Derivative Transactions0
No derivative transactions reported
SULLIVAN MARK — Insider Transaction (Form 4) Filed Sep 26, 2025 | Finecho