SEI Investments CIO receives 14,314-unit stock grant

The award consists of restricted stock units that remain subject to vesting.

Available on EDGAR 11/12/2026 - 08:15 AM EST Accepted by SEC EDGAR 11/12/2026 - 08:14 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

SEI Investments Co. Chief Information Officer Kristie Edling-Day acquired 14,314 restricted stock units on October 19, 2026, as employment compensation. The units are subject to vesting. Her reported resulting position was 14,314 shares; the transaction was an award, not a reported market purchase.

Insider Trade Summary

Grant/Award: 14,314 shares

Grant/Award 1 txn

Insider Edling-Day Kristie

Role Chief Information Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	14,314	--	--

Holdings After Transaction: Common Stock — 14,314 shares (Direct)

Holdings Before and After: Common Stock, 0 to 14,314 shares (Direct)

Footnotes (2)

1. F1. Consists of Restricted Stock Units subject to vesting. The reporting person became subject to Section 16 upon commencing employment and receiving the reported securities. The filing of this Form 4 was delayed while EDGAR filing access codes were being obtained.
2. F2. Received as employment compensation

Key Figures

Restricted stock units acquired: 14,314 units Reported resulting position: 14,314 shares

2 metrics

Restricted stock units acquired 14,314 units October 19, 2026; employment compensation

Reported resulting position 14,314 shares After the reported transaction

Key Terms

Restricted Stock Units, vesting, Section 16

3 terms

Restricted Stock Units financial

"Consists of Restricted Stock Units subject to vesting"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

vesting financial

"Restricted Stock Units subject to vesting"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

Section 16 regulatory

"became subject to Section 16 upon commencing employment"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many shares did SEIC's chief information officer acquire?

Kristie Edling-Day acquired 14,314 restricted stock units on October 19, 2026, as employment compensation; the units are subject to vesting.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

Edling-Day Kristie

(Last) (First) (Middle)

1 FREEDOM VALLEY DRIVE

(Street)

OAKS PENNSYLVANIA 19456

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/19/2026

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

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

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

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	10/19/2026		A		14,314(1)	A	(2)	14,314	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. Consists of Restricted Stock Units subject to vesting. The reporting person became subject to Section 16 upon commencing employment and receiving the reported securities. The filing of this Form 4 was delayed while EDGAR filing access codes were being obtained.

2. Received as employment compensation

Remarks:

	/s/ Kristie Edling-Day by Diane Gallagher, attorney-in-fact	11/12/2026
	** 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.
* Form 4: SEC 1474 (03-26)