Exponent director granted 2,859 RSUs, exercises 2,009

Exponent Inc director Debra Zumwalt reported routine equity compensation activity.

Rhea-AI Filing Summary

Exponent Inc director Debra Zumwalt reported routine equity compensation activity. On June 4, 2026, she received a grant of 2,859 Restricted Stock Units, which will cliff-vest before the company’s next annual shareholder meeting. On June 3, 2026, she exercised 2,009 RSUs into the same number of common shares on a 1:1 basis, bringing her direct common stock holdings to 31,830 shares.

Insider Trade Summary

2,009 shares exercised/converted

Exercise 3 txns

Insider Zumwalt Debra

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	2,859	$0.00	$0.00
Exercise	Restricted Stock Units	2,009	$0.00	$0.00
Exercise	Common Stock	2,009	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 2,859 contracts (Direct); Common Stock — 31,830 shares (Direct)

Footnotes (4)

1. F1. Reflects the conversion of shares of vested Restricted Stock Units granted on June 5, 2025 into shares of Common Stock on a 1:1 basis.
2. F2. Not applicable.
3. F3. 1-for-1.
4. F4. Restricted stock units will cliff-vest on the day prior to the Company's next annual shareholder meeting.

Key Figures

RSU grant: 2,859 units RSUs exercised: 2,009 units Shares after transaction: 31,830 shares +1 more

4 metrics

RSU grant 2,859 units Restricted Stock Units granted on June 4, 2026

RSUs exercised 2,009 units RSUs converted into common stock on June 3, 2026

Shares after transaction 31,830 shares Direct common stock holdings following Form 4 transactions

RSU vesting Cliff-vest Vests the day prior to next annual shareholder meeting

Key Terms

Restricted Stock Units, cliff-vest, derivative security

3 terms

Restricted Stock Units financial

"Reflects the conversion of shares of vested Restricted Stock Units granted on June 5, 2025 into shares of Common Stock"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

cliff-vest financial

"Restricted stock units will cliff-vest on the day prior to the Company's next annual shareholder meeting."

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.

FAQ

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

What insider transactions did Exponent (EXPO) director Debra Zumwalt report?

Debra Zumwalt reported a grant of 2,859 Restricted Stock Units and the exercise of 2,009 previously granted RSUs into common stock. These transactions reflect equity compensation and derivative exercise activity, not open-market buying or selling of Exponent shares.

How many Restricted Stock Units did Debra Zumwalt receive from Exponent (EXPO)?

She received 2,859 Restricted Stock Units on June 4, 2026. These RSUs are a form of stock-based compensation and represent a right to receive an equal number of Exponent common shares once the specified vesting conditions are met.

When will Debra Zumwalt’s new Exponent (EXPO) RSUs vest?

The 2,859 Restricted Stock Units will cliff-vest on the day before Exponent’s next annual shareholder meeting. Cliff-vesting means the full award vests at one time, rather than gradually over several dates or intervals.

What RSU exercise did Debra Zumwalt report for Exponent (EXPO)?

On June 3, 2026, she exercised 2,009 Restricted Stock Units, converting them into 2,009 shares of Exponent common stock on a 1:1 basis. This reflects the settlement of previously vested equity awards, not a market purchase.

How many Exponent (EXPO) shares does Debra Zumwalt hold after these transactions?

Following the reported transactions, Debra Zumwalt directly holds 31,830 shares of Exponent common stock. This figure reflects her updated ownership after exercising 2,009 RSUs into common shares and does not include any remaining derivative awards.

Do the reported Exponent (EXPO) Form 4 transactions involve any share sales?

The Form 4 shows no share sales by Debra Zumwalt. All reported transactions are acquisitions or conversions: a grant of 2,859 Restricted Stock Units and the exercise of 2,009 RSUs into common stock, both categorized as non-sale equity compensation events.

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 06/04/2026 - 09:04 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^*

Zumwalt Debra

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026

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	06/03/2026		M(1)		2,009	A	(2)	31,830	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	(3)	06/03/2026		M(1)			2,009	06/03/2026	06/03/2026	Common Stock	2,009	(2)	0	D
Restricted Stock Units	(3)	06/04/2026		A		2,859		06/04/2027(4)	06/04/2027	Common Stock	2,859	(2)	2,859	D

Explanation of Responses:

1. Reflects the conversion of shares of vested Restricted Stock Units granted on June 5, 2025 into shares of Common Stock on a 1:1 basis.

2. Not applicable.

3. 1-for-1.

4. Restricted stock units will cliff-vest on the day prior to the Company's next annual shareholder meeting.

	By: Wendy Whitehouse For: Debra Zumwalt	06/04/2026
	** 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)