Waiver Letter to Voting Agreement

Exhibit 10.13

November 4, 2019

Shareholder Representative Services LLC

950 17^th Street, Suite 1400

Denver, CO 80202

Attn: Managing Director

Fax: (303) 623-0294

Email: ***@***

And each of the individuals and entities set forth on the signature page hereto

To whom it may concern:

Reference is made to the Voting Agreement dated as of October 28, 2019 (the “Voting Agreement”), by and among BiomX Inc. (formerly Chardan Healthcare Acquisition Corp.), a Delaware corporation (the “Company”), BiomX Ltd., an Israeli company, Chardan Investments, LLC and each of the individuals and entities set forth on the signature pages hereto. Any capitalized terms not defined herein shall have the same meaning as such terms have in the Voting Agreement.

In Section 2.3 of the Voting Agreement, the parties agreed to “maintain the size of the Company’s Board of Directors at seven (7) persons for two (2) years from the Closing Date.” By signing below, the parties hereto hereby agree to waive the requirement in Section 2.3 that the size of the Board of Directors of the Company be maintained at seven persons, such waiver to expire on the earlier of (i) the six month anniversary of this letter and (ii) the Company’s annual meeting of shareholders in 2020.

For the avoidance of doubt, this waiver does not alter the original terms of the Voting Agreement, other than the waiver described above.

Sincerely,

[Signature Page – Waiver, Voting Agreement]

This Waiver is hereby executed effective as of the date first set forth above.

[Signature Page for Shareholders – Waiver, Voting Agreement]

[Signature Page for Shareholders – Waiver, Voting Agreement]