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: Hoffman Michael B (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-07-30	Common Stock	C	83857	—	Acquired	728517	Indirect
2013-07-30	Common Stock	C	105363	—	Acquired	833880	Indirect
2013-07-30	Common Stock	C	266712	—	Acquired	1100592	Indirect
2013-07-30	Common Stock	C	476087	—	Acquired	1576679	Indirect
2013-07-30	Common Stock	C	85744	—	Acquired	1662423	Indirect
2013-07-30	Common Stock	C	84530	—	Acquired	1746953	Indirect
2013-07-30	Common Stock	C	172411	—	Acquired	1919364	Indirect
2013-07-30	Common Stock	C	226024	—	Acquired	2145388	Indirect
2013-07-30	Common Stock	C	1226942	—	Acquired	3372330	Indirect
2013-07-30	Common Stock	P	1000000	$15.00	Acquired	4372330	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-07-30	Series B Convertible Preferred Stock	$	C	99350	Disposed		Common Stock (83857)	Indirect
2013-07-30	Series C Convertible Preferred Stock	$	C	140449	Disposed		Common Stock (105363)	Indirect
2013-07-30	Series D Convertible Preferred Stock	$	C	355528	Disposed		Common Stock (266712)	Indirect
2013-07-30	Series E Covertible Preferred Stock	$	C	634625	Disposed		Common Stock (476087)	Indirect
2013-07-30	Series F Convertible Preferred Stock	$	C	111227	Disposed		Common Stock (85744)	Indirect
2013-07-30	Series F Convertible Preferred Stock	$	C	109653	Disposed		Common Stock (84530)	Indirect
2013-07-30	Series G Convertible Preferred Stock	$	C	229825	Disposed		Common Stock (172411)	Indirect
2013-07-30	Series H COnvertible Preferred Stock	$	C	301290	Disposed		Common Stock (226024)	Indirect
2013-07-30	Series I Convertible Preferred Stock	$	C	1635514	Disposed		Common Stock (1226942)	Indirect

Footnotes

F1: The Series B Convertible Preferred Stock converted into Common Stock on a 0.85-for-1 basis and had no expiration date.

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

F3: The Series D Convertible Preferred Stock converted into Common Stock on a 0.75-for-1 basis and had no expiration date.

F4: The Series E Convertible Preferred Stock converted into Common Stock on a 0.75-for-1 basis and had no expiration date.

F5: The Series F Convertible Preferred Stock converted into Common Stock on a 0.77-for-1 basis and had no expiration date.

F6: The Series G Convertible Preferred Stock converted into Common Stock on a 0.75-for-1 basis and had no expiration date.

F7: The Series H Convertible Preferred Stock converted into Common Stock on a 0.75-for-1 basis and had no expiration date.

F8: The Series I Convertible Preferred Stock converted into Common Stock on a 0.75-for-1 basis and had no expiration date.

F9: These shares are held in a trust for the benefit of the reporting person's descendants. The reporting person's spouse is a trustee of the trust.