Deciphera Pharmaceuticals, Inc. Confidential and Anonymous Financial Concern Hotline

Consistent with our values, we recognize the importance of maintaining a positive, ethical, and compliant culture at Deciphera Pharmaceuticals, Inc., and its direct and indirect subsidiaries (hereinafter “Deciphera”) including compliance with healthcare law and complaints regarding accounting, internal controls, and auditing matters. Each employee has a duty to act – meaning, if you see, hear, or know about a potential violation of 1) the Healthcare Compliance Manual, or 2) the Deciphera Code of Business Conduct or Ethics you have a duty to report the suspected violations. You may report your concerns by using one of two methods: Secure Web Form or Secure Hotline. Deciphera will not retaliate, harass, or otherwise take adverse action against an employee or contractor who makes a good-faith report of any known or suspected violation or seeks assistance, in good-faith, to address a compliance concern.

CONFIDENTIALITY COMMITMENT

Deciphera’s hotline vendor is an independent provider, and they are committed to protecting the identity of all persons who use the secure reporting system. Submitted reports are shared with Deciphera’s designee(s), and while all reports are taken seriously Deciphera maintains the sole discretion on whether to investigate.