SEI Investments Co (SEIC) director reports 2,266-share stock grant

Rhea-AI Filing Summary

SEI Investments Co director Jonathan Brassington reported acquiring 2,266 shares of the company’s common stock on 12/12/2025. The filing indicates these are restricted stock units that are subject to vesting and were received as compensation for service on the company’s Board of Directors.

Following this grant, Brassington beneficially owns 6,207 shares of SEI Investments Co common stock, held in direct ownership.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Brassington Jonathan

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,266	$0.00	--

Holdings After Transaction: Common Stock — 6,207 shares (Direct)

Footnotes (1)

1. Restricted Stock Units subject to vesting. Received as compensation for service on the Company's Board of Directors.

Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Brassington Jonathan

(Last) (First) (Middle)

ONE FREEDOM VALLEY DRIVE

(Street)

OAKS PA 19456

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SEI INVESTMENTS CO [ SEIC ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

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	12/12/2025		A		2,266(1)	A	(2)	6,207	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. Restricted Stock Units subject to vesting.

2. Received as compensation for service on the Company's Board of Directors.

Remarks:

	/s/ Jonathan Brassington, by Diane Gallagher, attorney in fact	12/16/2025
	** 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 SEI Investments Co (SEIC) report for Jonathan Brassington?

The report shows that director Jonathan Brassington acquired 2,266 shares of SEI Investments Co common stock on 12/12/2025.

What type of equity did the SEIC director receive in this Form 4?

The 2,266 units are described as Restricted Stock Units subject to vesting, tied to SEI Investments Co common stock.

Why did the SEI Investments Co director receive the 2,266 restricted stock units?

The restricted stock units were received as compensation for Jonathan Brassington’s service on the Company's Board of Directors.

How many SEI Investments Co shares does the director own after this transaction?

After the reported transaction, Jonathan Brassington beneficially owns 6,207 shares of SEI Investments Co common stock in direct ownership.

What is the transaction date reported in this SEIC Form 4 filing?

The earliest transaction date disclosed is 12/12/2025 for the acquisition of restricted stock units.

Is this SEI Investments Co Form 4 filed for one or multiple reporting persons?

The form indicates it is filed by one reporting person, covering director Jonathan Brassington.