Apellis (APLS) CSO sells 2,277 shares to cover RSU tax withholding

Rhea-AI Filing Summary

Apellis Pharmaceuticals' Chief Scientific Officer, Pascal Deschatelets, reported a small insider stock sale. On January 13, 2026, he sold 2,277 shares of Apellis common stock at a price of $22.1872 per share. According to the footnote, these shares were sold solely to cover tax withholding on Restricted Stock Units that were released on January 12, 2026.

After this transaction, Deschatelets beneficially owned 1,158,219 shares of Apellis common stock in direct form. The filing is made as a Form 4 by a single reporting person in his capacity as Chief Scientific Officer.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Deschatelets Pascal

(Last) (First) (Middle)

C/O APELLIS PHARMACEUTICALS, INC.

100 FIFTH AVENUE, 3RD FLOOR

(Street)

WALTHAM MA 02451

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Apellis Pharmaceuticals, Inc. [ APLS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Scientific Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/13/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/13/2026		S(1)		2,277	D	$22.1872	1,158,219	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This represents shares sold to cover tax withholding on the Restricted Stock Units released on January 12, 2026.

	/s/ David Watson, attorney-in-fact for Pascal Deschatelets	01/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Apellis (APLS) report in this Form 4?

The Form 4 reports that Chief Scientific Officer Pascal Deschatelets sold 2,277 shares of Apellis common stock on January 13, 2026.

At what price were the Apellis (APLS) shares sold by the CSO?

The 2,277 Apellis common shares were sold at a price of $22.1872 per share.

Why did the Apellis (APLS) Chief Scientific Officer sell shares?

The filing explains that the shares were sold to cover tax withholding on Restricted Stock Units that were released on January 12, 2026.

How many Apellis (APLS) shares does the CSO own after this transaction?

Following the reported sale, Pascal Deschatelets beneficially owned 1,158,219 shares of Apellis common stock.

Is the Apellis (APLS) Form 4 filed by more than one reporting person?

No. The Form 4 is indicated as being filed by one reporting person, Chief Scientific Officer Pascal Deschatelets.

What is the relationship of the reporting person to Apellis (APLS)?

The reporting person, Pascal Deschatelets, is an officer of Apellis Pharmaceuticals, serving as its Chief Scientific Officer.