Exponent (EXPO) VP converts 5,510 RSUs, 1,756 shares withheld for taxes

Rhea-AI Filing Summary

Exponent Inc. Group Vice President Maureen T. F. Reitman exercised restricted stock units and settled related taxes in shares. On March 11, 2026, 5,510 vested Restricted Stock Units granted on March 11, 2022 were converted into 5,510 shares of Common Stock on a 1:1 basis.

To satisfy tax withholding obligations, 1,756 shares of Common Stock were withheld by the company at $70.03 per share. After these transactions, Reitman directly owned 39,226 shares of Exponent Common Stock, reflecting a routine compensation-related vesting and tax withholding event rather than an open-market sale.

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

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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^*

Reitman Maureen T. F.

(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)		5,510	A	(2)	40,982	D
Common Stock	03/11/2026		F(3)		1,756	D	$70.03	39,226	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			5,510	03/11/2026(1)	03/11/2026	Common Stock	5,510	(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: Maureen T.F. Reitman	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.

FAQ

What insider transaction did Exponent (EXPO) report for Maureen T. F. Reitman?

Exponent reported that Group Vice President Maureen T. F. Reitman converted 5,510 vested Restricted Stock Units into 5,510 shares of Common Stock and had 1,756 of those shares withheld by the company to cover tax obligations, leaving her with 39,226 directly owned shares.

How many Exponent (EXPO) Restricted Stock Units vested and converted in this Form 4?

A total of 5,510 vested Restricted Stock Units converted into 5,510 shares of Exponent Common Stock on a 1:1 basis. These RSUs were originally granted on March 11, 2022, and the conversion occurred on March 11, 2026 as part of routine equity compensation.

How were taxes paid on Maureen Reitman’s Exponent (EXPO) RSU vesting?

Taxes were satisfied through share withholding. Exponent withheld 1,756 shares of Common Stock at $70.03 per share to cover Maureen Reitman’s tax withholding obligations, rather than requiring a cash payment, which is a common mechanism for equity-based compensation events.

Did Maureen Reitman sell Exponent (EXPO) shares in the open market in this filing?

The filing shows no open-market sale. It reports an RSU conversion into 5,510 shares and a tax-withholding disposition of 1,756 shares retained by the company to satisfy tax obligations, which differs from a sale of shares to third-party investors in the market.

How many Exponent (EXPO) shares does Maureen Reitman own after these transactions?

Following the RSU conversion and tax withholding, Maureen Reitman directly owns 39,226 shares of Exponent Common Stock. This figure reflects her post-transaction holdings as reported, after 1,756 shares were withheld to meet tax obligations related to the vesting event.

What does transaction code M and F mean in this Exponent (EXPO) Form 4?

Code M indicates the exercise or conversion of a derivative security, here the conversion of 5,510 Restricted Stock Units into Common Stock. Code F represents shares withheld by the issuer, with 1,756 shares used to pay tax liabilities through share delivery instead of cash.