Timothy Sullivan - Oct 21, 2025 Form 4 Insider Report for Apellis Pharmaceuticals, Inc. (APLS)

Signature
/s/ David Watson, attorney-in-fact for Timothy Sullivan
Stock symbol
APLS
Transactions as of
Oct 21, 2025
Transactions value $
-$180,000
Form type
4
Date filed
10/23/2025, 04:20 PM
Previous filing
Sep 10, 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sullivan Timothy Eugene Chief Financial Officer C/O APELLIS PHARMACEUTICALS, INC., 100 FIFTH AVENUE, 3RD FLOOR, WALTHAM /s/ David Watson, attorney-in-fact for Timothy Sullivan 2025-10-23 0001707000

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction APLS Common Stock Options Exercise $100K +10K +9.01% $10.03 121K Oct 21, 2025 Direct F1
transaction APLS Common Stock Sale -$280K -10K -8.27% $28.03 111K Oct 21, 2025 Direct F1
holding APLS Common Stock 60.4K Oct 21, 2025 The Timothy E Sullivan Irrevocable Trust of 2023 F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction APLS Stock Option (Right to Buy) Options Exercise $0 -10K -4.12% $0.00 233K Oct 21, 2025 Common Stock 10K $10.03 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This is a scheduled exercise & sale from 10b5-1 trading plan dated June 9, 2025.
F2 The securities are held by The Timothy E Sullivan Irrevocable Trust of 2023. Patrick O. Collins is the trustee of The Timothy E Sullivan Irrevocable Trust of 2023. The reporting person disclaims beneficial ownership over the shares held by The Timothy E Sullivan Irrevocable Trust of 2023 except to the extent of his pecuniary interest therein.
F3 This option was granted on October 18, 2017 and fully vested.