Ronald P. Whelan - 28 Feb 2026 Form 4/A - Amendment Insider Report for Smart Sand, Inc. (SND)

Role: The Reporting Person is Executive Vice President of Last Mile Services of the Issuer.
Signature: /s/ Lee E. Beckelman as Attorney-in-Fact for Ronald P. Whelan
Issuer symbol: SND
Transactions as of: 28 Feb 2026
Net transactions value: -$32,438
Form type: 4/A - Amendment
Filing time: 03 Mar 2026, 19:42:14 UTC
Date Of Original Report: 03 Mar 2026
Previous filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
WHELAN RONALD P	The Reporting Person is Executive Vice President of Last Mile Services of the Issuer.	C/O SMART SAND, INC., 1000 FLORAL VALE BOULEVARD, SUITE 225, YARDLEY	/s/ Lee E. Beckelman as Attorney-in-Fact for Ronald P. Whelan	03 Mar 2026	0001687143

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SND	Common Stock	Tax liability	$32,438	-6,250	-1.3%	$5.19	471,111	28 Feb 2026	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	The Form 4, as originally filed, incorrectly reported the number of shares as 442,260. The Form 4, as amended by this Form 4/A, currently reports the corrected number of shares.

Remarks:

The Reporting Person is Executive Vice President of Last Mile Services of the Issuer.