REPH Recro Pharma Inc

EXPLANATORY NOTE

This Registration Statement is being filed for the purpose of registering an additional 2,835,032 shares of common stock, par value $0.01 per share (“Common Stock”) of Societal CDMO, Inc. (the “Registrant”) that were added to the shares authorized for issuance under the Recro Pharma, Inc. 2018 Amended and Restated Equity Incentive Plan (the “Plan”) for which Registration Statements on Form S-8 relating to the same employee benefit plan are effective.

The Registrant previously filed Registration Statements on Form S-8 (File Nos. 333-194730, 333-206309, 333-208749, 333-216579, 333-223437, 333-224870, 333-229736, 333-236875, 333-253574 and 333-263180) with the Securities and Exchange Commission (the “Commission”) to register 12,824,359 shares of Common Stock, that were authorized for issuance under the Plan. Upon the effectiveness of this Registration Statement, an aggregate of 15,659,391 shares of Common Stock will be registered for issuance from time to time under the Plan. Pursuant to General Instruction E to Form S-8, the contents of the Registration Statements on Form S-8 (File Nos. 333-194730, 333-206309, 333- 208749, 333-216579, 333-223437, 333-224870, 333-229736, 333-236875, 333-253574 and 333-263180) filed with the Commission on March 21, 2014, August 12, 2015, December 23, 2015, March 9, 2017, March 5, 2018, May 11, 2018, February 19, 2019, March 4, 2020, February 26, 2021 and March 1, 2022 are incorporated herein by reference except to the extent supplemented, amended or superseded by the information set forth herein. Only those items of Form S-8 containing new information not contained in the earlier registration statements are presented herein.