Jasper Therapeutics, Inc.

Public companies file this within four business days when something important happens that investors should know about before the next quarterly report.

Jasper Therapeutics, Inc. filed this to release information to investors under Regulation FD — usually a press release, conference presentation, or other event the company considers important. htm PRESS RELEASE, DATED JUNE 1, 2026 Exhibit 99. 1 Jasper Therapeutics Announces Exploration of Strategic Alternatives to Maximize Shareholder Value REDWOOD CITY, Calif.