James Derek Ussery

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	172,908	2.68 mm	0
31 Jul 24	SLCA U.S. Silica	Common Stock	Sale back to company	Dispose D	No	No	15.5	75,583	1.17 mm	0
31 Jul 24	SLCA U.S. Silica	Common Stock	Sale back to company	Dispose D	No	No	15.5	99,189	1.54 mm	75,583
3 Apr 24	SLCA U.S. Silica	Common Stock	Sell	Dispose S	No	Yes	14	46,433	650.06 k	174,772
12 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.56	4,025	42.50 k	221,205
12 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.56	20,526	216.75 k	225,230
12 Feb 24	SLCA U.S. Silica	Common Stock	Grant	Acquire A	No	No	0	52,160	0.00	245,756
10 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.33	3,471	35.86 k	193,596
9 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.33	5,064	52.31 k	197,067
8 Feb 24	SLCA U.S. Silica	Common Stock	Grant	Acquire A	No	No	0	43,953	0.00	202,131

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