COLLEGIUM PHARMACEUTICAL, INC

This Current Report on Form 8-K and the exhibits filed herewith contain forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. We may, in some cases, use terms such as "predicts," "forecasts," "believes," "potential," "proposed," "continue," "estimates," "anticipates," "expects," "plans," "intends," "may," "could," "might," "should" or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. Examples of forward-looking statements contained in this Current Report on Form 8-K include, among others, statements related to the expected closing of the transaction; the anticipated benefits of the acquisition of AZSTARYS, including its impact on the Company's ADHD portfolio and commercial strategy; projected financial performance, including expected revenue and adjusted EBITDA, and other statement that are not historic facts. Such statements are subject to numerous important factors, risks and uncertainties that may cause actual events or results, performance, or achievements to differ materially from our current expectations.* *Actual results may differ materially from management’s expectations and such forward-looking statements in this filing could be affected as a result of various important factors, including risks relating to, among others: risks related to our ability to complete the transaction on the proposed terms and schedule or at all; the failure (or delay) to receive the required regulatory approvals relating to the transaction; risks related to our ability to realize the anticipated benefits of the proposed acquisition, including the possibility that the expected benefits from the acquisition will not be realized or will not be realized within the expected time period; the risk that the businesses will not be integrated successfully; disruption from the transaction making it more difficult to maintain business and operational relationships; negative effects of this filing or the consummation of the proposed acquisition on the market price of our common stock and/or operating results; risks related to significant transaction costs or the acquisition of unknown liabilities; the risk of litigation and/or regulatory actions related to the proposed acquisition; risks related to future opportunities and plans for AZSTARYS, including uncertainty of the expected financial performance of AZSTARYS; risks related to future opportunities and plans for our products, including uncertainty of the expected financial performance of such products; our ability to commercialize and grow sales of our products; our ability to manage our relationships with licensors; the success of competing products that are or become available; our ability to obtain and maintain regulatory approval of our products and any product candidates, and any related restrictions, limitations, and/or warnings in the label of our products; the size of the markets for our products and product candidates, and our ability to service those markets; our ability to obtain reimbursement and third-party payor contracts for our products; the rate and degree of market acceptance of our products and product candidates; the costs of commercialization activities, including marketing, sales and distribution; changing market conditions for our products; the outcome of any patent infringement, opioid-related or other litigation that may be brought by or against us, including litigation with Purdue Pharma, L.P.; the outcome of any governmental investigation related to our business; our ability to secure adequate supplies of active pharmaceutical ingredient for each of our products and manufacture adequate supplies of commercially saleable inventory; our ability to obtain funding for our operations and business development; regulatory developments in the U.S.; our expectations regarding our ability to obtain and maintain sufficient intellectual property protection for our products; our ability to comply with stringent U.S. and foreign government regulation in the manufacture of pharmaceutical products, including U.S. Drug Enforcement Agency compliance; our customer concentration; and the accuracy of our estimates regarding expenses, revenue, capital requirements and need for additional financing. These and other risks are described under the heading "Risk Factors" in our Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q and other filings with the SEC. Any forward-looking statements that we make in this filing speak only as of the date of this filing. We assume no obligation to update our forward-looking statements whether as a result of new information, future events or otherwise, after the date of this filing.

• Schedules omitted pursuant to Item 601(b)(2) of Regulation S-K. The Company agrees to furnish supplementally a copy of any omitted schedule to the SEC upon request.

^ Certain portions of this Exhibit have been redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K. The Company hereby agrees to furnish supplementally an unredacted copy of the exhibit to the SEC upon its request.