Stacy Russell

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	159,425	2.47 mm	0
31 Jul 24	SLCA U.S. Silica	Common Stock	Sale back to company	Dispose D	No	No	15.5	66,369	1.03 mm	0
31 Jul 24	SLCA U.S. Silica	Common Stock	Sale back to company	Dispose D	No	No	15.5	120,383	1.87 mm	66,369
11 Mar 24	SLCA U.S. Silica	Common Stock	Sell	Dispose S	No	Yes	12	20,000	240.00 k	186,752
12 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.56	4,427	46.75 k	206,752
12 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.56	22,578	238.42 k	211,179
12 Feb 24	SLCA U.S. Silica	Common Stock	Grant	Acquire A	No	No	0	57,375	0.00	233,757
10 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.33	4,068	42.02 k	176,382
9 Feb 24	SLCA U.S. Silica	Common Stock	Payment of exercise	Dispose F	No	No	10.33	4,589	47.40 k	180,450
8 Feb 24	SLCA U.S. Silica	Common Stock	Grant	Acquire A	No	No	0	35,527	0.00	185,039

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