Heritage-Crystal Clean, Inc. to Hold 2023 First Quarter Conference Call

April 25, 2023

Hoffman Estates, IL., April 25, 2023 — Heritage-Crystal Clean, Inc. (Nasdaq: HCCI) plans to release its financial results for the first quarter of 2023, which ended March 31, 2023, after the market close on Tuesday, May 9, 2023.

The company will host a conference call on Wednesday, May 10, 2023 at 9:00 AM Central Time, during which management will give a presentation focusing on the Company’s operations and financial results.

Interested parties can listen to the audio webcast available through our company website, https://www.crystal-clean.com/investor-relations/, and can participate on the call by dialing (888) 440-4149. After dialing the number, you will be required to provide the following passcode before being joined to the conference call: 8889427.

To register for the webcast of the conference call, visit https://events.q4inc.com/attendee/667310180