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  • Insider Ownership

Insider Trading & Ownership of Mark Jeffrey DeLong

Location
Waltham, MA
Summary
The estimated net worth of Mark Jeffrey DeLong is at least $3,217,229 dollars as of 21 Jan 2026. Mark Jeffrey DeLong is the Chief Business & Strat Officer of Apellis Pharmaceuticals, Inc. and owns shares of Apellis Pharmaceuticals, Inc. (APLS) stock worth about $3.22M.
Signature
/s/ David Watson, attorney-in-fact for Mark DeLong
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Ownership of Mark Jeffrey DeLong

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
APLS Apellis Pharmaceuticals, Inc. Chief Business & Strat Officer $3,217,229 -$87,033 -2.6% 20 Jan 2026

Insider Transactions Reported by Mark Jeffrey DeLong:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.