13D Filing: Red Mountain Capital Inches Up Stake In Air Transport Services Group, Inc. (ATSG)

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

RMCP GP LLC

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a) x

(b) ¨

SEC USE ONLY

SOURCE OF FUNDS*

CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED

PURSUANT TO ITEMS 2(d) or 2(e)

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH REPORTING

PERSON

WITH

SOLE VOTING POWER

11,152,425 shares (See Item 5)

SHARED VOTING POWER

None (See Item 5)

SOLE DISPOSITIVE POWER

11,152,425 shares (See Item 5)

SHARED DISPOSITIVE POWER

None (See Item 5)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

11,152,425 shares (See Item 5)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES

CERTAIN SHARES*

¨

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

17.3% (See Item 5)

TYPE OF REPORTING PERSON*

OO Limited Liability Company