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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	Director	Officer	Large Shareholder	Other
1411087	Golden Gate Capital Opportunity Fund-A, L.p.	C/O Golden Gate Private Equity, Inc. One Embarcadero Center, 39Th Floor San Francisco CA 94111	No	No	Yes	No
1430733	Ggcof Third-Party Co-Invest, L.p.	C/O Golden Gate Private Equity, Inc. One Embarcadero Center, 39Th Floor San Francisco CA 94111	No	No	Yes	No
1431072	Ggcof Co-Invest, L.p.	C/O Golden Gate Private Equity, Inc. One Embarcadero Center, 39Th Floor San Francisco CA 94111	No	No	Yes	No
1437622	Golden Gate Capital Opportunity Fund, L.p.	C/O Golden Gate Private Equity, Inc. One Embarcadero Center, 39Th Floor San Francisco CA 94111	No	No	Yes	No
1488545	Ggc Opportunity Fund Management, L.p.	C/O Golden Gate Private Equity, Inc. One Embarcadero Center, 39Th Floor San Francisco CA 94111	No	No	Yes	No
1492387	Ggc Opportunity Fund Management Gp, Ltd.	C/O Golden Gate Private Equity, Inc. One Embarcadero Center, 39Th Floor San Francisco CA 94111	No	No	Yes	No
1492388	Ggcof Co-Invest Management, L.p.	C/O Golden Gate Private Equity, Inc. One Embarcadero Center, 39Th Floor San Francisco CA 94111	No	No	Yes	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, Par Value $0.01	Disposition	2013-03-19	9,775,000	$21.12	31,401,471	No	4	S	Indirect	See footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See footnotes

Footnotes

GGC USS Holdings, LLC ("Holdings") is the direct beneficial owner of 31,401,471 shares of common stock of U.S. Silica Holdings, Inc. The shares beneficially owned directly by Holdings are beneficially owned indirectly by (a) Golden Gate Capital Opportunity Fund, L.P., (b) Golden Gate Capital Opportunity Fund-A, L.P., (c) GGCOF Third-Party Co-Invest, L.P. and (d) GGCOF Co-Invest, L.P. The shares indirectly held by the funds listed in clauses (a) through (c) are beneficially owned indirectly by their general partner, GGC Opportunity Fund Management, L.P. ("Management GP"), and the general partner of Management GP, GGC Opportunity Fund Management GP, Ltd. ("Ultimate GP"). (Continue in footnote 2)
The shares indirectly held by the fund listed in clause (d) are beneficially owned indirectly by its general partner, GGCOF Co-Invest Management, L.P. ("GGCOF Management"), the general partner of GGCOF Management, Management GP, and the general partner of Management GP, Ultimate GP. Ultimate GP has voting and dispositive authority over the shares held by Holdings and is governed by its board of directors.