13G Filing: Blue Mountain Capital and Avista Healthcare Public Acquisiton Corp (AHPA)

Page 2 of 6 – SEC Filing


CUSIP No. G0726L109 13G Page
2
of 6 Pages
  1.

NAMES OF
REPORTING PERSONS

BlueMountain Capital
Management, LLC

  2.

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (see instructions)

(a)  ☐        (b)  ☒

  3.

SEC USE ONLY

  4.

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

5.

SOLE VOTING POWER

0

6.

SHARED VOTING POWER

2,040,718

7.

SOLE DISPOSITIVE POWER

0

8.

SHARED DISPOSITIVE POWER

2,040,718

  9.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

2,040,718

10.

CHECK IF THE AGGREGATE AMOUNT IN ROW
(9) EXCLUDES CERTAIN SHARES (see instructions)

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (9)

6.6% (1)

12.

TYPE OF REPORTING PERSON (see
instructions)

IA

(1) The percentage set forth in Row 11 of this Cover Page is based on the 31,000,000 shares of Ordinary Shares (as defined herein) of the Issuer (as defined herein) outstanding as of November 14, 2017, as reported on
the Issuers Form 10-Q filed with the Securities and Exchange Commission on November 14, 2017 (Form 10-Q).

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