13G Filing: Boxer Capital, LLC and Macrogenics Inc (MGNX)

Page 3 of 7 – SEC Filing


CUSIP No. 556099109

  1

Name of
reporting persons.

Boxer Asset Management Inc.

  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.

Bahamas

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH:

5

Sole voting power.

-0-

6

Shared voting power.

1,987,000

7

Sole dispositive power.

-0-

8

Shared dispositive power.

1,987,000

  9

Aggregate amount beneficially owned by each reporting person.

1,987,000

10

Check box if the aggregate amount in
row (9) excludes certain shares (see instructions).

11

Percent of class represented by amount
in row (9).

5.5%*

12

Type of reporting person

CO

* Based on 36,112,593 shares of common stock reported to be outstanding on the Issuers Prospectus Supplement filed with the Securities and Exchange Commission on April 27, 2017.

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