Exponent VP exercises RSUs, net share increase

Exponent Inc Group Vice President Richard Reiss reported routine equity compensation activity.

Rhea-AI Filing Summary

Exponent Inc Group Vice President Richard Reiss reported routine equity compensation activity. He exercised 2,120 Restricted Stock Units granted on March 11, 2022, converting them into an equal number of common shares on a 1:1 basis. To cover related tax obligations, the company withheld 958 common shares at a value of $70.03 per share. After these transactions, Reiss directly holds 3,960 shares of Exponent common stock, indicating a net increase in his ownership from this award vesting and tax withholding event.

Insider Trade Summary

2,120 shares exercised/converted

Exercise 3 txns

Insider Reiss Richard

Role Group Vice President

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	2,120	$0.00	$0.00
Exercise	Common Stock	2,120	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	958	$70.03	$67K

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct); Common Stock — 3,960 shares (Direct)

Footnotes (3)

1. F1. Reflects the conversion of shares of vested Restricted Stock Units granted on March 11, 2022 into shares of Common Stock on a 1:1 basis.
2. F2. Not applicable.
3. F3. Reflects shares of common stock withheld by the Company to satify the tax withholding obligations of the Reporting Person.

FAQ

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

What insider transactions did Exponent (EXPO) report for Richard Reiss?

Exponent reported that Group Vice President Richard Reiss exercised 2,120 Restricted Stock Units into common stock and had 958 shares withheld to satisfy tax obligations, leaving him with 3,960 directly held common shares after the March 11, 2026 transactions.

Did Richard Reiss of Exponent (EXPO) buy or sell shares on the open market?

The filing shows no open-market purchases or sales. Instead, Reiss exercised 2,120 Restricted Stock Units and the company withheld 958 shares to cover taxes, a standard compensation-related transaction rather than a discretionary market trade.

How many Exponent (EXPO) shares does Richard Reiss hold after this Form 4?

Following the reported transactions, Richard Reiss directly holds 3,960 shares of Exponent common stock. This reflects the vesting and conversion of 2,120 Restricted Stock Units and the withholding of 958 shares by the company to meet his tax obligations.

What was the purpose of the 958 Exponent (EXPO) shares disposed of in this filing?

The 958 shares of Exponent common stock were withheld by the company to satisfy Richard Reiss’s tax withholding obligations arising from the vesting and conversion of his Restricted Stock Units. This is recorded as a tax-withholding disposition, not an open-market sale.

What do the Restricted Stock Unit conversions mean for Exponent (EXPO) insider ownership?

The conversion of 2,120 Restricted Stock Units into common stock increased Richard Reiss’s direct share ownership to 3,960 shares. This reflects routine equity compensation vesting, combined with share withholding to pay taxes, rather than a change driven by market trading decisions.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 03/13/2026 - 05:24 PM EDT 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).

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^*

Reiss Richard

(Last) (First) (Middle)

149 COMMONWEALTH DRIVE

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
EXPONENT INC [ EXPO ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/11/2026

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	03/11/2026		M(1)		2,120	A	(2)	4,918	D
Common Stock	03/11/2026		F(3)		958	D	$70.03	3,960	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
Restricted Stock Units	(1)	03/11/2026		M(1)			2,120	03/11/2026	03/11/2026	Common Stock	2,120	(2)	0	D

Explanation of Responses:

1. Reflects the conversion of shares of vested Restricted Stock Units granted on March 11, 2022 into shares of Common Stock on a 1:1 basis.

2. Not applicable.

3. Reflects shares of common stock withheld by the Company to satify the tax withholding obligations of the Reporting Person.

	By: Wendy Whitehouse For: Richard Reiss	03/13/2026
	** 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.