SIGA TECHNOLOGIES INC - Director's Dealing 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SIGA TECHNOLOGIES INC (SIGA)
CIK: 0001010086
Period of Report: 2016-05-14

Reporting Person: CONSTANCE THOMAS E (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-05-14	Common Stock, Par Value $.0001 Per Share	M	15000	—	Acquired	215000	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-05-17	Restricted Stock Units	$	A	15000	Acquired		Common Stock, par value $.0001 per share (15000)	Direct
2016-05-14	Restricted Stock Units	$	M	15000	Disposed		Common Stock, par value $.0001 per share (15000)	Direct

F1: Each restricted stock unit ("RSU") converts into one share of common stock of SIGA Technologies, Inc. on a one for one basis.

F2: The RSUs vest on the first anniversary of the grant date.

F3: The RSUs were granted on May 14, 2015, and vested on the first anniversary of such date.