Senior insider sale

SEE REMARKS at SMART SAND, INC. — senior position signals high conviction

$383.3K

75K shares

What this filing means

YOUNG JAMES DOUGLAS plans to sell 75K shares of SMART SAND, INC. valued at approximately $383.3K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

YOUNG JAMES DOUGLAS

Filed: 8/17/2026ACC: 0001972490-26-000019

InsiderYOUNG JAMES DOUGLASCIK 1709934

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IssuerSMART SAND, INC.CIK 1529628

Officer· SEE REMARKS

Since Feb 2026

75K

Shares to sell

$383.3K

Approx. market value

75K

Acquired (3 months)

Planned

Securities Acquired — Last 3 Months7

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Equity Compensation Grant

6/7/2026

6.59K

Equity Compensation Grant

2/28/2026

10.36K

Equity Compensation Grant

2/28/2026

15.76K

Equity Compensation Grant

2/22/2026

17.94K

Equity Compensation Grant

3/17/2025

6.59K

Equity Compensation Grant

7/30/2022

12.81K

Equity Compensation Grant

4/30/2022

4.95K

Total acquired75K

Acquisition Date	Type	Amount Acquired	Gift
6/7/2026	Equity Compensation Grant Equity Compensation Grant	6.59K	—
2/28/2026	Equity Compensation Grant Equity Compensation Grant	10.36K	—
2/28/2026	Equity Compensation Grant Equity Compensation Grant	15.76K	—
2/22/2026	Equity Compensation Grant Equity Compensation Grant	17.94K	—
3/17/2025	Equity Compensation Grant Equity Compensation Grant	6.59K	—
7/30/2022	Equity Compensation Grant Equity Compensation Grant	12.81K	—
4/30/2022	Equity Compensation Grant Equity Compensation Grant	4.95K	—
Total		75K

Planned & Completed Dispositions1

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NASDAQPlanned

Units to sell

75K

Market value

$383.3K

8/17/2026

Total

Units

75K

Value

$383.3K

Date	Units to Sell	Approx. Market Value	Exchange	Status
8/17/2026	75K	$383.3K	NASDAQ	Planned
Total	75K	$383.3K