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Exponent (EXPO) CEO Catherine Corrigan exercises options, lifts stake to 128,436 shares

(High)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Exponent Inc. reports that Chief Executive Officer Catherine Corrigan exercised options to acquire 12,665 shares of common stock on July 28, 2026 at an exercise price of $37.45 per share, converting a Non-Qualified Stock Option scheduled to expire on February 15, 2028.

Following the exercise, Corrigan directly holds 128,436 shares of Exponent common stock.

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Insider Corrigan Catherine
Role Chief Executive Officer
Type Security Shares Price Value
Exercise Non-Qualified Stock Option (right to buy) F2, F1 12,665 -- --
Exercise Common Stock 12,665 $37.45 $474K
Holdings After Transaction: Non-Qualified Stock Option (right to buy) — 12,665 shares (Direct); Common Stock — 128,436 shares (Direct)
Footnotes (2)
  1. F1. The stock option becomes exercisable in four equal annual installments.
  2. F2. Not applicable.
Options Exercised 12,665 shares Non-Qualified Stock Option converted to common stock on July 28, 2026
Exercise Price $37.45 per share Exercise price of the Non-Qualified Stock Option
Shares Held After Transaction 128,436 shares Directly held Exponent common stock following the option exercise
Option Expiration Date February 15, 2028 Original expiration date of the exercised Non-Qualified Stock Option
Non-Qualified Stock Option financial
"security_title: "Non-Qualified Stock Option (right to buy)""
A non-qualified stock option (NSO) is a contract that lets an employee or service provider buy company shares at a fixed price for a set period, like a voucher to purchase stock later at today’s price. It matters to investors because exercising NSOs creates ordinary income for the holder and can increase share count, affecting a company’s earnings and ownership mix; think of it as a future sale that can dilute existing shareholders and has immediate tax consequences for the recipient.
derivative security financial
"transaction_code_description: "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
Common Stock financial
"underlying_security_title: "Common Stock""
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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

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FAQ

What insider transaction did EXPO CEO Catherine Corrigan report?

Catherine Corrigan exercised stock options to acquire 12,665 Exponent (EXPO) common shares. The options were Non-Qualified Stock Options, converted on July 28, 2026, at an exercise price of $37.45 per share, increasing her directly held common stock position.

How many EXPO shares does Catherine Corrigan hold after this Form 4?

After the reported transactions, Catherine Corrigan directly holds 128,436 shares of Exponent (EXPO) common stock. This reflects the addition of 12,665 shares acquired through option exercise on July 28, 2026, with no open-market sales reported in this filing.

What was the exercise price of Catherine Corrigan’s EXPO stock options?

The exercised Non-Qualified Stock Options had an exercise price of $37.45 per Exponent (EXPO) share. Corrigan converted options covering 12,665 underlying shares into common stock at this price on July 28, 2026, and the original option was correspondingly disposed of.

Were Catherine Corrigan’s EXPO transactions under a Rule 10b5-1 plan?

The Form 4 indicates the transactions were not made pursuant to a Rule 10b5-1 trading plan. The document-level Rule 10b5-1 checkbox is explicitly unchecked, so these exercises are reported as discretionary rather than pre-planned trades.

What were the terms of the EXPO options exercised by Catherine Corrigan?

Corrigan exercised a Non-Qualified Stock Option for 12,665 Exponent (EXPO) shares at $37.45 per share. A footnote states the option became exercisable in four equal annual installments and was scheduled to expire on February 15, 2028, before this full exercise.
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*
Corrigan Catherine

(Last)(First)(Middle)
149 COMMONWEALTH DRIVE

(Street)
MENLO PARK CALIFORNIA 94025

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
EXPONENT INC [ EXPO ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
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 Stock07/28/2026M12,665A$37.45128,436D
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
Non-Qualified Stock Option (right to buy)$37.4507/28/2026M12,665 (1)02/15/2028Common Stock12,665(2)12,665D
Explanation of Responses:
1. The stock option becomes exercisable in four equal annual installments.
2. Not applicable.
By: Wendy Whitehouse For: Catherine Corrigan07/30/2026
** 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)