Shinn Bryan Adair

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
31 Jul 24	SLCA U.S. Silica	RSU	Sale back to company	Dispose D	No	No	15.5	790,392	12.25 mm	0
31 Jul 24	SLCA U.S. Silica	Common Stock	Sale back to company	Dispose D	No	No	15.5	327,891	5.08 mm	0
31 Jul 24	SLCA U.S. Silica	Common Stock	Sale back to company	Dispose D	No	No	15.5	1,387,786	21.51 mm	327,891
31 Jul 24	SLCA U.S. Silica	Employee Stock Option Common Stock	Sale back to company	Dispose D	No	No	15.5	52,300	810.65 k	0
31 Jul 24	SLCA U.S. Silica	Employee Stock Option Common Stock	Sale back to company	Dispose D	No	No	15.5	47,747	740.08 k	0
31 Jul 24	SLCA U.S. Silica	Employee Stock Option Common Stock	Sale back to company	Dispose D	No	No	15.5	72,954	1.13 mm	0
12 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.56	23,476	247.91 k	1,715,677
12 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.56	119,728	1.26 mm	1,739,153
12 Feb 24	SLCA U.S. Silica	Common Stock	Grant	Acquire A	No	No	0	304,262	0.00	1,858,881
12 Sep 23	SLCA U.S. Silica	Common Stock	Sell	Dispose S	No	Yes	14.056	41,501	583.34 k	1,419,183

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.