Traws Pharma, Inc. — Director's Dealing 2013

Aug 1, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Onconova Therapeutics, Inc. (ONTX)
CIK: 0001130598
Period of Report: 2013-07-30

Reporting Person: Baxter Healthcare SA (10% Owner)
Reporting Person: BAXTER INTERNATIONAL INC (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-07-30	Common Stock	C	2273295	—	Acquired	2273295	Direct
2013-07-30	Common Stock	P	330000	$15.00	Acquired	2603295	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-07-30	Series J Convertible Preferred Stock	$	C	3030303	Disposed		Common Stock (2273295)	Direct

Footnotes

F1: The reported securities are owned directly by Baxter Healthcare SA, which is an indirect wholly-owned subsidiary of Baxter International Inc. Baxter International Inc. is an indirect beneficial owner of the reported securities.

F2: The Series J Convertible Preferred Stock converted into Common Stock on a 0.75-for-1 basis and had no expiration date.