UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE TO

(RULE 14D-100)

Amendment No. 4

Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1)

of the Securities Exchange Act of 1934

YUME, INC.

(Name of Subject Company)

REDWOOD MERGER SUB I, INC.

(Offeror)

RHYTHMONE PLC

(Parent of Offeror)

(Names of Filing Persons)

COMMON STOCK, $0.001 PAR VALUE

(Title of Class of Securities)

98872B104

(CUSIP Number of Class of Securities)

Ted Hastings

601 Montgomery Street, Suite 1600

San Francisco, CA 94111

(415) 655-1450

(Name, address and telephone number of person authorized to receive notices and communications on behalf of filing persons)

Copies to:

CALCULATION OF FILING FEE

Check the appropriate boxes below to designate any transactions to which the statement relates:

Check the following box if the filing is a final amendment reporting the results of the tender offer:  ☐

If applicable, check the appropriate box(es) below to designate the appropriate rule provision(s) relied upon:

This Amendment No. 4 to the Tender Offer Statement on Schedule TO (this “Amendment”) is filed by RhythmOne plc, a public limited company incorporated and registered in England and Wales with company number 06223359 (“RhythmOne”) and Redwood Merger Sub I, Inc., a Delaware corporation and a wholly-owned subsidiary of RhythmOne (“Purchaser”). This Amendment amends and supplements the Tender Offer Statement on Schedule TO filed with the U.S. Securities and Exchange Commission (the “SEC”) on January 4, 2018 (the “Schedule TO”), as amended by Amendment No. 1 to the Schedule TO filed with the SEC on January 16, 2018 and Amendment No. 2 to the Schedule TO filed with the SEC on January 26, 2018, and relates to the offer by the Purchaser and RhythmOne to exchange for each outstanding share of common stock (“YuMe Share”) of YuMe, Inc., a Delaware corporation (“YuMe”), a combination of cash and stock consideration for their YuMe Shares. For each YuMe Share held, YuMe stockholders are being offered (i) $1.70 in cash without interest, and (ii) 0.7325 ordinary shares of RhythmOne (“RhythmOne Shares”), which gives effect to the 10-for-1 share consolidation of RhythmOne Shares implemented on September 25, 2017, subject to the terms and conditions set forth in the prospectus/offer to exchange which is a part of the registration statement on Form F-4 filed by RhythmOne with the SEC on December 22, 2017, as amended (the “Prospectus/Offer to Exchange”) and the related Letter of Transmittal.

All information regarding the Offer as set forth in the Schedule TO, including all exhibits and annexes thereto that were previously filed with the Schedule TO, is hereby expressly incorporated by reference into this Amendment, except that such information is hereby amended and supplemented to the extent specifically provided for herein and to the extent amended and supplemented by the exhibits filed herewith.

Capitalized terms used and not defined herein shall have the meanings assigned to such terms in the Prospectus/Offer to Exchange.

Items 1 through 11.

Items 1 through 11 of the Schedule TO are hereby amended and supplemented by adding the following text thereto:

“At one minute after 11:59 p.m. Pacific Time, on February 1, 2018, the Offer expired as scheduled and was not extended. The Purchaser was advised by Computershare Trust Company, N.A., the depositary and exchange agent for the Offer, that as of the expiration of the Offer, a total of 26,122,350 YuMe Shares were validly tendered in the Offer and not validly withdrawn, representing approximately 74.4% of YuMe’s outstanding common stock. The number of YuMe Shares validly tendered and not validly withdrawn pursuant to the Offer satisfied the minimum tender condition to the Offer, and all other conditions to the Offer were satisfied. Accordingly, the Purchaser accepted for exchange, and will promptly exchange, all 26,122,350 YuMe Shares validly tendered and not validly withdrawn.

Following consummation of the Offer, RhythmOne intends to consummate a merger of the Purchaser with and into YuMe, with YuMe surviving the merger as a wholly owned subsidiary of RhythmOne (the “First Merger”). The First Merger will be governed by Section 251(h) of the General Corporation Law of the State of Delaware. Immediately following the First Merger, the surviving corporation will merger with and into Merger Sub II, with Merger Sub II surviving the merger as a wholly owned subsidiary of RhythmOne (the “Second Merger”, and together with the First Merger, the “Mergers”). Following the Mergers, all YuMe Shares will be delisted from the New York Stock Exchange and deregistered under the Securities Exchange Act of 1934, as amended.”

Item 12 of the Schedule TO is hereby amended and supplemented by adding the following exhibits:

SIGNATURES

After due inquiry and to the best of the undersigned’s knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: February 2, 2018