Sienna Biopharmaceuticals, Inc. | Retention Agreements | Business Contracts

Management Retention Plan Letter by and between Sienna Biopharmaceuticals, Inc. and Frederick C. Beddingfield III, dated as of September 11, 2019 (Filed With SEC on November 12, 2019)

Management Retention Plan Letter by and between Sienna Biopharmaceuticals, Inc. and Alexander Azoy, dated as of September 11, 2019 (Filed With SEC on November 12, 2019)

Management Retention Plan Letter by and between Sienna Biopharmaceuticals, Inc. and Paul Lizzul, dated as of September 11, 2019 (Filed With SEC on November 12, 2019)

Management Retention Plan Letter by and between Sienna Biopharmaceuticals, Inc. and Timothy K. Andrews, dated as of September 11, 2019 (Filed With SEC on November 12, 2019)

Key Employee Retention Plan (Filed With SEC on November 12, 2019)

Sienna Biopharmaceuticals, Inc. (18) | Retention Agreements (5)