Listing Alert
MIAX Pearl
January 30, 2026 | 11:40 AM
MIAX Exchange Group - Options Markets - Corporate Action Alert: Atossa Therapeutics, Inc. (ATOS)
Atossa Therapeutics, Inc. (ATOS) has announced a reverse spit effective for Monday, February 2, 2026. On this date, the current ATOS option class will change to ATOS1. The MIAX Options Exchange, MIAX Pearl Options Exchange, MIAX Emerald Options Exchange and MIAX Sapphire Options Exchange will not list ATOS1 options. Therefore, no options on ATOS will be available for trading on Monday, February 2, 2026.
Atossa Therapeutics, Inc. (ATOS) will resume trading on the MIAX Options Exchange, MIAX Pearl Options Exchange, MIAX Emerald Options Exchange and MIAX Sapphire Options Exchange on Tuesday, February 3, 2026.
All GTC orders resting on the MIAX order books in TOS will be canceled at the close of business on Friday, January 30, 2026.
Additional details about the Atossa Therapeutics, Inc. (ATOS) reverse split are provided in the attached OCC Memo.
Please contact MIAX Listings with any questions at Listings@miaxglobal.com or (609) 897-7308.