Traws Pharma, Inc. — Director's Dealing 2014

May 17, 2014

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Onconova Therapeutics, Inc. (ONTX)
CIK: 0001130598
Period of Report: 2014-05-09

Reporting Person: Guerin Mark Patrick (Chief Accounting Officer)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	600	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (right to buy)	$28.81	2023-10-04	Common Stock (30000)		Direct
Stock Option (right to buy)	$13.48	2023-12-20	Common Stock (6000)		Direct
Stock Option (right to buy)	$6.30	2024-03-31	Common Stock (24500)		Direct

Footnotes

F1: This option, representing a right to purchase, vests over 4 years, with 25% vesting on October 4, 2014 and 75% vesting in 36 equal monthly installments thereafter, subject to continued service to the issuer.

F2: This option, representing a right to purchase, vests over 4 years in 48 equal monthly installments, subject to continued service to the issuer.