13D Filing: Energy Spectrum Securities Corp and American Midstream Partners, Lp (AMID)

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Page 6 of 10 SEC Filing

CUSIP: 02752P100 13D
6 of 10
1

names
of reporting persons

Costar Midstream Energy LLC

2

check the appropriate
box if a member of a group

(A)  ¨

(B)  ¨

3

sec use only

 

4

source of funds

OO

5

check
if disclosure of legal proceedings is required pursuant to items 2(d) or 2(e)                    ¨

 

6

citizenship or place
of organization

Texas

number of
shares
beneficially
owned by
each
reporting
person
with
7

sole voting power

39,700

8

shared voting power

0

9

sole dispositive power

39,700

10

shared dispositive power

0

11

aggregate amount beneficially
owned by each reporting person

39,700

12

check
box if the aggregate amount in row (11) excludes certain shares            ¨

 

13

percent of class represented
by amount in row (11)

0.13%*

14

type of reporting person

OO

*          Based
on the 30,425,829 Common Units outstanding as of November 6, 2015, as reported in the Issuer’s Quarterly Report on Form
10-Q filed on November 9, 2015.

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