STOCK TITAN

SEI Investments Co (SEIC) EVP exercises options, sells 25,000 shares

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

SEI Investments Co Executive Vice President Michael Peterson exercised an option to acquire 25,000 shares of common stock at $55.73 per share, received as employment compensation, and on the same day sold 25,000 shares at a weighted average price of $102.05, within a $102.00 to $102.14 range. The option for 25,000 shares was fully exercised, and he continues to hold 362.2978 shares indirectly through the Employee Stock Purchase Plan.

Positive

  • None.

Negative

  • None.
Insider Peterson Michael
Role Executive Vice President
Sold 25,000 shs ($2.55M)
Approx. gross sale proceeds $2.55M
Approx. exercise cost $1.39M
Approx. pre-tax spread $1.16M
Type Security Shares Price Value
Exercise Option to Purchase Common Stock F2 25,000 -- --
Exercise Common Stock 25,000 $55.73 $1.39M
Sale Common Stock F1 25,000 $102.05 $2.55M
holding Common Stock -- -- --
Holdings After Transaction: Option to Purchase Common Stock — 0 shares (Direct); Common Stock — 20,148 shares (Direct); Common Stock — 362.2978 shares (Indirect, By Employee Stock Purchase Plan)
Footnotes (2)
  1. F1. Represents the weighted average of a range of sale prices from $102.00 to $102.14. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price.
  2. F2. Received as employment compensation.
Shares underlying option exercised 25,000 shares Option to purchase common stock exercised on 2026-07-28
Option exercise price $55.73 per share Conversion or exercise price of option to purchase common stock
Shares sold 25,000 shares Common stock sold on 2026-07-28 following option exercise
Weighted average sale price $102.05 per share Weighted average sale price with range from $102.00 to $102.14
Employee Stock Purchase Plan holdings 362.2978 shares Indirect common stock holdings by Employee Stock Purchase Plan after transactions
Option expiration date 2030-06-18 Expiration date of option that was exercised for 25,000 shares
Exercise or conversion of derivative security financial
"Transaction code M is described as Exercise or conversion of derivative security"
Employee Stock Purchase Plan financial
"Indirect ownership of 362.2978 shares is noted as By Employee Stock Purchase Plan"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
weighted average financial
"Represents the weighted average of a range of sale prices from $102.00 to $102.14"
A weighted average is a way of calculating an overall number when some items matter more than others by giving each item a different level of importance, or weight. Investors use weighted averages to combine figures like prices, returns or earnings so the result reflects the size or significance of each part — like grading a class where a final exam counts more than a quiz, producing a score that better represents true performance.

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

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FAQ

What did SEI Investments (SEIC) executive Michael Peterson do in this insider transaction?

Michael Peterson exercised an option to acquire 25,000 shares of SEI Investments common stock at $55.73 per share and then sold 25,000 shares the same day at a weighted average price of $102.05 in open-market style transactions.

How many SEI Investments (SEIC) shares did Michael Peterson exercise and at what option price?

He exercised an option covering 25,000 shares of SEI Investments common stock at an exercise price of $55.73 per share. The option, received as employment compensation, had an expiration date of 2030-06-18 before being fully exercised in this transaction.

At what prices were Michael Peterson’s SEIC shares sold, and what does the weighted average mean?

The 25,000 SEI Investments shares were sold at a weighted average price of $102.05, with individual sale prices ranging from $102.00 to $102.14. The weighted average represents the price averaged across multiple trades at slightly different prices.

Were Michael Peterson’s SEI Investments (SEIC) trades made under a Rule 10b5-1 plan?

The transactions were not reported as being made under a Rule 10b5-1 trading plan. The filing’s Rule 10b5-1 checkbox was left unchecked, and no footnote indicates that a pre-arranged trading plan governed these specific trades.

What SEI Investments (SEIC) holdings does Michael Peterson report after these transactions?

After exercising and selling shares, Peterson reports an indirect holding of 362.2978 shares of SEI Investments common stock through an Employee Stock Purchase Plan. The filing does not specify his remaining direct common-stock holdings beyond this indirect plan position.

What was the nature and term of the option Michael Peterson exercised in SEIC stock?

The option was an Option to Purchase Common Stock for 25,000 shares, received as employment compensation, with an exercise price of $55.73 per share and an expiration date of 2030-06-18. Following this transaction, the reported derivative position from that option is zero.
SEC Form 4
FORM 4UNITED 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*
Peterson Michael

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Executive Vice President
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/28/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock07/28/2026M25,000A$55.7345,148D
Common Stock07/28/2026S25,000D$102.05(1)20,148D
Common Stock362.2978IBy Employee Stock Purchase Plan
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Option to Purchase Common Stock$55.7307/28/2026M25,00012/31/202106/18/2030Common Stock25,000(2)0D
Explanation of Responses:
1. Represents the weighted average of a range of sale prices from $102.00 to $102.14. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price.
2. Received as employment compensation.
/s/ Michael Peterson by Lindsay A. Barci, attorney in fact07/30/2026
** Signature of Reporting PersonDate
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)