13D Filing: Hudson Executive Capital and Cabot Microelectronics Corp (NASDAQ:CCMP)

1

NAMES OF REPORTING PERSONS

Douglas L. Braunstein

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)

☐

(b)

☐

3

SEC USE ONLY

4

SOURCE OF FUNDS (SEE INSTRUCTIONS)

AF

5

CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)

☐

6

CITIZENSHIP OR PLACE OF ORGANIZATION

United States

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

7

SOLE VOTING POWER

0

8

SHARED VOTING POWER

1,234,300

9

SOLE DISPOSITIVE POWER

0

10

SHARED DISPOSITIVE POWER

1,234,300

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,234,300

12

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

☐

13

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

4.9%²

14

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

IN

Calculated based on 25,029,129 shares of common stock, par value $0.001 per share, of Cabot Microelectronics Corporation, outstanding as of January 31, 2017, as reported in its quarterly report on Form 10-Q for the quarterly period ended December 31, 2016.