Altimmune, Inc. — Director's Dealing 2010

May 11, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PHARMATHENE, INC (PIP)
CIK: 0001326190
Period of Report: 2010-05-06

Reporting Person: Riddle Valerie D (SVP, Medical Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-06	Stock Options (right to buy)	$1.38	A	75000	Acquired	2020-05-06	Common Stock (75000)	Direct

Footnotes

F1: On May 6, 2010, the date such options were granted, the closing price of the Issuer's Common Stock on the NYSE Amex was $1.38
per share.

F2: The option vests over a 4 year period with 25% each vesting on the first, second, third and fourth anniversaries of the grant
date.