DELONG MARK JEFFREY

PrivateCIK: 1856078
Location

WALTHAM, MA

DELONG MARK JEFFREY (Senior Vice President) sold 4.1% of their position (3.37K shares) of APELLIS PHARMACEUTICALS, INC. on the open market

Open‑market sale worth $73.4K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderDELONG MARK JEFFREYCIK 1856078
Officer· Senior Vice President
Since Mar 2021
-3.37K
Net shares
Net seller
$73.4K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
3.37K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

3.37K

Price / share

$21.77

Trade value

$73.37K

% of position

4.1%
1/22/2026
81.72K78.35K
Total

Net shares

3.37K

Net value

-$73.37K

Derivative Transactions0
No derivative transactions reported
DELONG MARK JEFFREY — Insider Transaction (Form 4) Filed Jan 23, 2026 | Finecho