13G Filing: Sabby Capital Opens Large Position in Rexahn Pharmaceuticals, Inc. (RNN)

1.
NAME OF REPORTING PERSONS

Sabby Management, LLC

2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a) [_]

(b) [X]

3.
SEC USE ONLY

4.
CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware, USA

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.
SOLE VOTING POWER

0

6.
SHARED VOTING POWER

15,625,000

7.
SOLE DISPOSITIVE POWER

0

8.
SHARED DISPOSITIVE POWER

15,625,000

9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

15,625,000

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)

7.33