Smart Sand (SND) EVP has 2,591 shares withheld to cover tax on vesting

Rhea-AI Filing Summary

Smart Sand, Inc.’s Executive VP of Operations, Robert Kiszka, reported a routine tax-related share withholding. On March 17, 2026, 2,591 shares of Smart Sand common stock were withheld at $4.08 per share to cover taxes due upon the vesting of restricted stock tied to his continued service.

After this tax-withholding disposition, Kiszka holds 542,191 shares directly. He is also shown as having 448,738 shares held indirectly through a limited liability company where he has sole voting and investment control, while disclaiming beneficial ownership beyond his economic interest.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider KISZKA ROBERT

Role Executive VP of Operations

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	2,591	$4.08	$11K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 542,191 shares (Direct); Common Stock — 448,738 shares (Indirect, BY LLC)

Footnotes (1)

1. Represents shares withheld for tax purposes upon the vesting of restricted stock granted to the Reporting Person, the vesting of which is based on the Reporting Person's continued employment with or service to the Issuer on the applicable vesting date. Held by a limited liability company ("LLC") of which the Reporting Person serves as the sole member with sole voting and investment control over the securities held thereby. The Reporting Person disclaims beneficial ownership of the securities held by the LLC except to the extent of his pecuniary interest therein.

Form 4 Insider Transactions: What Each Field Means →

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^*

KISZKA ROBERT

(Last) (First) (Middle)

C/O SMART SAND, INC.

1000 FLORAL VALE BOULEVARD, SUITE 225

(Street)

YARDLEY PENNSYLVANIA 19067

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Smart Sand, Inc. [ SND ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive VP of Operations

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

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	03/17/2026		F		2,591(1)	D	$4.08	542,191	D
Common Stock								448,738	I	BY LLC(2)

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

Explanation of Responses:

1. Represents shares withheld for tax purposes upon the vesting of restricted stock granted to the Reporting Person, the vesting of which is based on the Reporting Person's continued employment with or service to the Issuer on the applicable vesting date.

2. Held by a limited liability company ("LLC") of which the Reporting Person serves as the sole member with sole voting and investment control over the securities held thereby. The Reporting Person disclaims beneficial ownership of the securities held by the LLC except to the extent of his pecuniary interest therein.

Remarks:

	/s/ Lee E. Beckelman, as Attorney-in-Fact for Robert Kiszka	03/19/2026
	** 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)

FAQ

What insider transaction did Smart Sand (SND) report for Robert Kiszka?

Smart Sand reported a tax-withholding disposition for Executive VP of Operations Robert Kiszka. 2,591 shares of common stock were withheld to cover taxes when his restricted stock vested, rather than being sold on the open market.

Was the Smart Sand (SND) Form 4 transaction an open-market sale?

No. The Form 4 shows shares withheld for tax purposes upon vesting of restricted stock. This F-code transaction is a tax-withholding disposition, not a discretionary open-market sale by the executive.

How many Smart Sand (SND) shares does Robert Kiszka hold after the transaction?

Following the tax-withholding disposition, Robert Kiszka holds 542,191 Smart Sand common shares directly. The filing also reports 448,738 shares held indirectly through an LLC, where he has sole voting and investment control subject to his pecuniary interest.

What is the significance of the LLC holding in Smart Sand (SND)’s Form 4?

The Form 4 shows 448,738 shares held by an LLC where Robert Kiszka is sole member with voting and investment control. He disclaims beneficial ownership of those shares except for his pecuniary interest, clarifying how those indirect holdings are treated.

At what price were Smart Sand (SND) shares withheld for Robert Kiszka’s taxes?

The 2,591 Smart Sand common shares withheld for taxes upon restricted stock vesting were valued at $4.08 per share. This reflects the price used to satisfy the tax liability tied to his equity compensation.