Exponent CEO exercises 2,379 options, sells shares

EXPONENT INC (EXPO) reported insider equity transactions by Chief Executive Officer Catherine Corrigan.

Rhea-AI Filing Summary

EXPONENT INC (EXPO) reported insider equity transactions by Chief Executive Officer Catherine Corrigan. On 2026-08-17 she exercised 2,379 Non-Qualified Stock Options at an exercise price of $29.05 per share, receiving an equal number of common shares and fully using that option grant. On the same date she sold 1,707 common shares at $66.2776 per share in a transaction the company identifies as made under a Rule 10b5-1 trading plan, with the sale described as covering the option exercise price and related taxes.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Corrigan Catherine

Role Chief Executive Officer

Sold 1,707 shs ($113K)

Approx. gross sale proceeds $113K

Approx. exercise cost $69K

Type	Security	Shares	Price	Value
Exercise	Non-Qualified Stock Option (right to buy) F3, F2	2,379	--	--
Exercise	Common Stock	2,379	$29.05	$69K
Sale	Common Stock F1	1,707	$66.2776	$113K

Holdings After Transaction: Non-Qualified Stock Option (right to buy) — 0 contracts (Direct); Common Stock — 129,108 shares (Direct)

Footnotes (3)

1. F1. Stock sale was to cover the option exercise price and taxes.
2. F2. The stock option becomes exercisable in four equal annual installments.
3. F3. Not applicable.

Key Figures

Options Exercised: 2,379 shares Option Exercise Price: $29.05 per share Shares Sold: 1,707 shares +2 more

5 metrics

Options Exercised 2,379 shares Non-Qualified Stock Option exercised into EXPO common stock on 2026-08-17

Option Exercise Price $29.05 per share Exercise price of the Non-Qualified Stock Option converted into common stock

Shares Sold 1,707 shares EXPO common stock sale on 2026-08-17

Sale Price $66.2776 per share Per-share price for the 1,707 EXPO shares sold

Options Remaining From Grant 0 options Total Non-Qualified Stock Options from this grant following the exercise

Key Terms

Non-Qualified Stock Option (right to buy), exercise price, Rule 10b5-1, open market or private transaction

4 terms

Non-Qualified Stock Option (right to buy) financial

"security_title: Non-Qualified Stock Option (right to buy)"

exercise price financial

"conversion_or_exercise_price: 29.0500"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

Rule 10b5-1 regulatory

"transactions were made pursuant to a Rule 10b5-1 trading plan"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

open market or private transaction financial

"transaction_code_description: Sale in open market or private transaction"

FAQ

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

What insider transactions did EXPO CEO Catherine Corrigan report on August 17, 2026?

Catherine Corrigan reported exercising 2,379 stock options at an exercise price of $29.05 per share and receiving the same number of EXPO common shares. She then sold 1,707 shares at $66.2776 per share in a disclosed transaction.

How many EXPONENT INC (EXPO) options did the CEO exercise and at what price?

The CEO exercised 2,379 Non-Qualified Stock Options on EXPO common stock at an exercise price of $29.05 per share. This option grant is now fully exercised, leaving 0 options from that specific award outstanding after the transaction.

How many EXPO shares did the CEO sell and at what price on August 17, 2026?

She sold 1,707 shares of EXPONENT INC common stock at $66.2776 per share. The filing characterizes this as a sale in an open market or private transaction and links it to covering the option exercise price and taxes.

Were Catherine Corrigan’s August 17, 2026 EXPO trades under a Rule 10b5-1 plan?

Yes, the filing’s Rule 10b5-1 checkbox is marked, indicating the reported transactions were executed pursuant to a pre-arranged trading plan. This means the trades followed predetermined instructions rather than being discretionary on that date.

What happened to the specific EXPONENT INC option grant involved in this Form 4?

The Form 4 shows the CEO exercised 2,379 options with an exercise price of $29.05, leaving 0 options from that grant after the transaction. A footnote notes this option became exercisable in four equal annual installments before exercise.

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

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Available on EDGAR 08/18/2026 - 09:43 PM Accepted by SEC EDGAR 08/18/2026 - 09:43 PM Learn about SEC filing dates

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).

X

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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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	08/17/2026		M		2,379	A	$29.05	130,815	D
Common Stock	08/17/2026		S(1)		1,707	D	$66.2776	129,108	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
Non-Qualified Stock Option (right to buy)	$29.05	08/17/2026		M			2,379	(2)	02/16/2027	Common Stock	2,379	(3)	0	D

Explanation of Responses:

1. Stock sale was to cover the option exercise price and taxes.

2. The stock option becomes exercisable in four equal annual installments.

3. Not applicable.

	By: Wendy Whitehouse For: Catherine Corrigan	08/18/2026
	** 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)