UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 20, 2020

REPLIMUNE GROUP, INC.

(Exact name of registrant as specified in its charter)

500 Unicorn Park

Woburn, MA 01801

(Address of principal executive offices, including Zip Code)

Registrant’s telephone number, including area code: (781) 222-9600

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).  Emerging growth company x

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. x

Item 8.01              Other Events.

On October 21, 2020, Replimune Group, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with J.P. Morgan Securities LLC and SVB Leerink LLC, as representatives of the several underwriters named therein (the “Underwriters”), relating to the issuance and sale of an aggregate of 4,687,500 shares of the Company’s common stock (the “Firm Shares”) and, in lieu of common stock to certain investors, pre-funded warrants to purchase 1,562,500 shares of the Company’s common stock (the “Pre-Funded Warrants”) to the Underwriters (the “Offering”). Pursuant to the Underwriting Agreement, the Company also granted the Underwriters a 30-day option to purchase up to 937,500 additional shares (the “Option Shares” and together with the Firm Shares, the “Shares”) of its common stock, which option was exercised in full by the Underwriters on October 22, 2020. The Shares will be sold to the purchasers at the public offering price of $40.00 per share and the Pre-Funded Warrants will be sold at a public offering price of $39.9999 per Pre-Funded Warrant, which equals the per share public offering price for the Shares less the $0.0001 exercise price for each such Pre-Funded Warrant. The Underwriting Agreement contains customary representations and warranties, conditions to closing, market standoff provisions, termination provisions and indemnification obligations, including for liabilities under the Securities Act of 1933, as amended. The representations, warranties and covenants contained in the Underwriting Agreement were made only for purposes of such agreement and as of specific dates, and were solely for the benefit of the parties to the Underwriting Agreement.

The Pre-Funded Warrants are exercisable at any time after the date of issuance. A holder of Pre-Funded Warrants may not exercise the warrant if the holder, together with its affiliates, would beneficially own more than 9.99% of the number of shares of the Company’s common stock outstanding immediately after giving effect to such exercise. A holder of Pre-Funded Warrants may increase or decrease this percentage not in excess of 19.99% by providing at least 61 days’ prior notice to the Company.

The Company estimates that net proceeds from the Offering will be approximately $270.0 million, after deducting underwriting discounts and commissions and estimated Offering expenses payable by the Company, and giving effect to the exercise of the Underwriters’ 30 day option to purchase additional shares of the Company’s common stock. The Company expects the Offering to close on October 26, 2020, subject to customary closing conditions. The Offering is being made pursuant to the shelf registration statement on Form S-3 (File No. 333-244386) previously filed by the Company with the Securities and Exchange Commission (the “SEC”) on August 11, 2020, and declared effective by the SEC on August 26, 2020, and a related prospectus supplement.

The Underwriting Agreement is filed as Exhibit 1.1 to this Current Report on Form 8-K and the foregoing description of the terms of the Underwriting Agreement is qualified in its entirety by reference to such exhibit. The form of Pre-Funded Warrant is filed as Exhibit 4.1 to this Current Report on Form 8-K and the foregoing description of the terms of the Pre-Funded Warrants is qualified in its entirety by reference to such exhibit. A copy of the opinion of Morgan, Lewis & Bockius LLP relating to the legality of the issuance and sale of the Shares and Pre-Funded Warrants in the Offering is filed with this Current Report on Form 8-K as Exhibit 5.1.

On October 20, 2020, the Company issued a press release announcing that it had commenced the Offering. On October 22, 2020, the Company issued a press release announcing that it had priced and upsized the Offering. Copies of these press releases are attached as Exhibits 99.1 and 99.2 hereto, respectively.

Neither the disclosures on this Current Report on Form 8-K nor the exhibits hereto shall constitute an offer to sell or the solicitation of an offer to buy the securities described herein and therein, nor shall there be any sale of such securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

Item 9.01              Financial Statements and Exhibits.

Forward-Looking Statements

This Current Report on Form 8-K contains forward looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and that involve risks and uncertainties, including statements regarding the expected net proceeds and the closing date of the Offering and other statements identified by words such as “could”, “expects”, “intends”, “may”, “plans”, “potential”, “should”, “will”, “would”, or similar expressions and the negatives of those terms. Forward-looking statements are not promises or guarantees of future performance, and are subject to a variety of risks and uncertainties, many of which are beyond our control, and which could cause actual results to differ materially from those contemplated in such forward-looking statements, including, but not limited to, the risks as may be detailed from time to time in our Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q and other reports we file with the SEC, and in the preliminary prospectus supplement, the free writing prospectus, the final prospectus supplement, and the accompanying prospectus related to the Offering. Our actual results could differ materially from the results described in or implied by such forward-looking statements. Forward-looking statements speak only as of the date hereof, and, except as required by law, we undertake no obligation to update or revise these forward-looking statements.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.