Stronghold Digital Mining (SDIG) SC 13G/A Stronghold Digital Mining / ARDSLEY ADVISORY PARTNERS ownership change

EXHIBIT 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(f) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of this Schedule 13G/A (including amendments thereto) with respect to the Common Stock of Stronghold Digital Mining, Inc. and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filing. In evidence thereof, the undersigned, hereby execute this Agreement this 25th day of January, 2023. 

January 25, 2023

Date

ARDSLEY ADVISORY PARTNERS LP

By: Ardsley Advisory Partners GP LLC, its general partner

/s/ Steve Napoli

Signature

Steve Napoli/ Member

Name/Title

January 25, 2023

Date

ARDSLEY ADVISORY PARTNERS GP LLC

/s/ Steve Napoli

Signature

Steve Napoli/ Member

Name/Title

January 25, 2023

Date

ARDSLEY PARTNERS I GP LLC

/s/ Steve Napoli

Signature

Steve Napoli/ Member

Name/Title

January 25, 2023

Date

PHILIP J. HEMPLEMAN

/s/ Steve Napoli*

Signature

Steve Napoli/Attorney-in Fact for Philip J. Hempleman

Name/Title

* Executed by Steve Napoli as Attorney-in-Fact for Philip J. Hempleman. The Power of Attorney for Mr. Hempleman is attached as Exhibit 2 to the Statement on Schedule 13G with respect to the Common Stock of Vaxgen, Inc., filed on February 15, 2006, and is incorporated herein by reference.