Exhibit 5.1
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 | | | | Wilson Sonsini Goodrich & Rosati Professional Corporation 12235 El Camino Real San Diego, California 92130 O: 858-350-2300 F: 858-350-2399 |
June 27, 2022
Viracta Therapeutics, Inc.
2533 S. Coast Hwy. 101, Suite 210
Cardiff, California 92007
Re: Registration Statement on Form S-8
Ladies and Gentlemen:
We have examined the Registration Statement on Form S-8 (the “Registration Statement”) to be filed by Viracta Therapeutics, Inc., a Delaware corporation (the “Company”), with the Securities and Exchange Commission on or about the date hereof, in connection with the registration under the Securities Act of 1933, as amended, of 500,000 shares (the “Shares”) of the Company’s common stock, par value $0.0001 per share (“Common Stock”), consisting of 500,000 shares of Common Stock reserved for issuance pursuant to the Company’s 2022 Employee Stock Purchase Plan (the “Plan”). As the Company’s legal counsel, we have reviewed the actions proposed to be taken by the Company in connection with the issuance and sale of the Shares to be issued under the Plan.
It is our opinion that the Shares, when issued and sold in the manner referred to in the Plan and pursuant to the agreements that accompany the Plan, will be legally and validly issued, fully paid and nonassessable.
We consent to the use of this opinion as an exhibit to the Registration Statement, and further consent to the use of our name wherever appearing in the Registration Statement and any amendments thereto.
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| Very truly yours, |
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| /s/ Wilson Sonsini Goodrich & Rosati, P.C. |
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| WILSON SONSINI GOODRICH & ROSATI, |
| Professional Corporation |
AUSTIN BEIJING BOSTON BRUSSELS HONG KONG LONDON LOS ANGELES NEW YORK PALO ALTO
SAN DIEGO SAN FRANCISCO SEATTLE SHANGHAI WASHINGTON, DC WILMINGTON, DE
