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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1524741	U.s. Silica Holdings Inc.	SLCA	Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)	263718801

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1350906	A Donald Merril	C/O U.s. Silica Holdings, Inc. 8490 Progress Drive Frederick MD 21701	Chief Financial Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2013-11-12	9,662	$13.17	9,662	No	4	M	Direct
Common Stock	Disposition	2013-11-12	9,662	$33.34	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (right to buy)	Disposition	2013-11-12	9,662	$0.00	9,662	$13.17

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
40,338		2022-10-15	No	4	M	Direct

Footnotes

Exercise and sale of vested options.
Weighted average share price ranging from $33.30 - $33.42 per share.
Option Grant dated October 15, 2012, vesting in four equal annual installments on grant anniversary date.
Since the date of the reporting person's last ownership report, Mr. Merril has transferred employee stock options to purchase 50,000 shares of SLCA common stock to his ex-wife pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his ex-wife.