MBT Mobile TeleSystems Public Joint Stock Company

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Amendment No. 1 to

SCHEDULE TO

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

of the Securities Exchange Act of 1934

Mobile TeleSystems Public Joint Stock Company

(Name of Subject Company (Issuer))

Joshua B. Tulgan

Director, Corporate Finance and Investor Relations

Mobile TeleSystems Public Joint Stock Company

5 Vorontsovskaya Street, bldg. 2, 109147 Moscow Russian Federation

Phone: +7 495 223 20 25, Fax: +7 495 911 65 67

E-mail: ir@mts.ru

(Name, address, and telephone number of person authorized

to receive notices and communications on behalf of Filing Persons)

Copies to:

J. David Stewart

Latham & Watkins LLP

Ul. Gasheka 6, Ducat III, Office 510

Moscow 125047

Russia

Telephone: +7 495 785 12 34

CALCULATION OF FILING FEE

*                  The transaction value is estimated only for purposes of calculating the filing fee. This amount is based on the tender offer for not more than $78,276,131 in aggregate for a maximum of 24,796,619 shares of common stock.

**           The amount of the filing fee equals US$115.90 per US$1,000,000 of the transaction value.

x           Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number, or the form or schedule and the date of its filing.

o             Check the box if the filing relates solely to preliminary communications made before the commencement of the tender offer.

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

o             third party tender offer subject to Rule 14d-1

x           issuer tender offer subject to Rule 13e-4

o             going private transaction subject to Rule 13e-3

o             amendment to Schedule 13D under Rule 13d-2

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

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

x Rule 13e-4(i) (Cross-Border Issuer Tender Offer)

o Rule 14d-1(d) (Cross-Border Third-Party Tender Offer)

SCHEDULE TO

This Amendment No. 1 (the “Amendment No. 1”) to Tender Offer Statement on Schedule TO amends and supplements the Tender Offer Statement on Schedule TO initially filed by Stream Digital, LLC (the “Offeror”), a wholly-owned subsidiary of Mobile TeleSystems Public Joint Stock Company (the “Company”), with the Securities and Exchange Commission on October 31, 2016 (together with any amendments and supplements thereto, the “Schedule TO”) , pursuant to Rule 13e-4 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The Schedule TO relates to the return of cash to holders of shares of common stock, par value RUB 0.10 per share (the “Common Stock”) and American Depositary Shares (“ADSs”) of the Company, by way of a cash tender offer by the Offeror for shares of the Company’s Common Stock (including shares of Common Stock represented by ADSs) up to a maximum aggregate purchase amount of RUB 4,934,527,300, on the terms and subject to the conditions set forth in the Offer to Purchase, dated October 31, 2016 (the “Offer to Purchase”), the related Common Stock Letter of Transmittal with respect to the shares of Common Stock and the related ADS Letter of Transmittal with respect to the ADSs (which collectively, as they may be amended and supplemented from time to time, constitute the “Tender Offer”), copies of which were filed with the initial Schedule TO as Exhibits (a)(1)(i), (a)(1)(ii) and (a)(1)(iv), respectively. This Schedule TO is intended to satisfy the reporting requirements of Rule 13e-4(c)(2) under the Exchange Act.

The information in the Offer to Purchase, the Common Stock Letter of Transmittal and the ADS Letter of Transmittal is incorporated by reference in answer to Items 1 through 11 in this Schedule TO, except that such information is hereby amended and supplemented to the extent specifically provided herein.

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Item 4. Terms of the Transaction.

Section 2.1 of Part IV of the Offer to Purchase is hereby amended by adding the following statement to the first sentence of the last paragraph of Section 2.1:

“provided, however, that any of the Conditions referred to above may be asserted by the Offeror only if the fulfillment or non-fulfillment of such Conditions have occurred (or shall have been reasonably determined by the Offeror to have occurred) based on circumstances not within the Offeror’s control and that, in the Offeror’s reasonable judgment, make it inadvisable to proceed with the Offer.”

Section 2.1 of Part IV of the Offer to Purchase is hereby amended by adding the following statement to replace in its entirety the second sentence of the last paragraph of Section 2.1:

“If any of the Conditions referred to above is triggered, the Offeror will promptly notify Shareholders whether or not the triggered Condition has been waived.”

Part VII of the Offer to Purchase is hereby amended by adding the following statement to the first sentence of the last paragraph before the section entitled “Information regarding the Company and the Tender Offer” on page 51 of the Offer to Purchase:

“provided, however, that any of the Conditions referred to above may be asserted by the Offeror only if the fulfillment or non-fulfillment of such Conditions have occurred (or shall have been reasonably determined by the Offeror to have occurred) based on circumstances not within the Offeror’s control and that, in the Offeror’s reasonable judgment, make it inadvisable to proceed with the Offer.”

Part VII of the Offer to Purchase is hereby amended by adding the following statement to replace in its entirety the second sentence of the last paragraph before the section entitled “Information regarding the Company and the Tender Offer” on page 51 of the Offer to Purchase:

“If any of the Conditions referred to above is triggered, the Offeror will promptly notify Shareholders whether or not the triggered Condition has been waived.”

The Company intends to publish an announcement on November 14, 2016, announcing the filing of Amendment No. 1 to the Schedule TO. A copy of the announcement is filed as Exhibit (a)(1)(vii) to the Schedule TO.

Item 12. Exhibits.

* Previously filed with Schedule TO on October 31, 2016.

† Filed herewith.

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SIGNATURES

After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this Amendment to Schedule TO is true, complete and correct.

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INDEX TO EXHIBITS

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