Exhibit 99.1

3M Company Announces Early Results of Its Cash Tender Offers and Early Settlement

ST. PAUL, Minn. — (Oct. 5, 2017) — 3M Company (“3M”) (NYSE: MMM) today announced the early tender results of its previously announced tender offers to purchase for cash up to $400,000,000 aggregate principal amount of its 5.70 percent notes due 2037 and 6 3/8 percent debentures due 2028 (each, an “offer,” and collectively, the “offers”). The terms and conditions of the offers are set forth in 3M’s Offer to Purchase dated Sept. 21, 2017 (the “offer to purchase”). Capitalized terms used but not defined herein have the meanings ascribed to them in the offer to purchase.

The aggregate principal amount of each series of notes validly tendered and not validly withdrawn in the offers (each series, a “series of notes,” and such notes, collectively, the “notes”) at or prior to 5 p.m., New York City time, on Oct. 4, 2017 (the “early tender deadline”), as reported by the tender agent and information agent, is set forth in the column entitled “aggregate principal amount tendered and accepted” in the table below. 3M also announced that it has exercised its option to have an early settlement date on Oct. 6, 2017.

The Notes

CUSIP Numbers

Aggregate
Principal
Amount
Outstanding

Acceptance
Priority Level

Reference
Security

Bloomberg
Reference
Page

Fixed
Spread
(bps)

Aggregate
Principal Amount
Tendered and
accepted

5.70% Notes due 2037

88579EAC9, US88579EAC93

750,000,000

3.000% due 5/15/2047

PX1

+50

194,719,000

63/8% Debentures due 2028

604059AE5, US604059AE52

330,000,000

2.250% due 8/15/2027

PX1

+60

110,193,000

Subject to the terms and conditions of the offers, holders or beneficial owners (“holders”) of notes who validly tendered and did not validly withdraw their notes at or prior to the early tender deadline, and whose notes are accepted for purchase by 3M, are eligible to receive consideration, per $1,000 principal amount, equal to the applicable total consideration for such series of notes. The total consideration will be determined in the manner described in the offer to purchase by reference to the applicable fixed spread for such series of notes set forth in the column entitled “fixed spread” in the table above, over the applicable yield based on the bid side price of the U.S. Treasury Security set forth for such series of notes in the column entitled “reference security” in the table above, as calculated by the dealer manager (as defined below) at 11 a.m., New York City Time, on Oct. 5, 2017. The total consideration includes an early tender premium equal to $50 per $1,000 principal amount of such series of notes accepted for purchase.

The withdrawal deadline of 5 p.m., New York City Time, on Oct. 4, 2017, has passed and the notes tendered pursuant to the offers may no longer validly be withdrawn, subject to applicable law.

The offers will expire at midnight, New York City time, at the end of Oct. 19, 2017, unless extended or earlier terminated.

3M’s obligation to accept for purchase, and to pay for, notes that are validly tendered and not validly withdrawn pursuant to the offers is conditioned on the satisfaction or waiver by 3M of a number of conditions. 3M may amend, extend or, subject to certain conditions and applicable law, terminate any or all of the offers at any time in its sole discretion.

J.P. Morgan Securities LLC is acting as dealer manager (the “dealer manager”) and D.F. King & Co., Inc. is acting as the tender agent and information agent for the offers. Requests for documents may be directed to D.F. King & Co., Inc. at (800) 330-5897 (toll free) or (212) 269-5550 (banks and brokers). Questions regarding the offers may be directed to J.P. Morgan Securities LLC at (866) 834-4666 (toll free) or (212) 834-3260 (collect). Copies of the offer to purchase, along with any amendments and supplements thereto, may be obtained for free at www.dfking.com/mmm.

This announcement is for informational purposes only and is not an offer to purchase or sell or a solicitation of an offer to purchase or sell, with respect to any securities. The offers to purchase the notes are only being made pursuant to the terms of the offer to purchase. The offers are not being made in any state or jurisdiction in which such offers would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. None of 3M, the dealer manager or the tender agent and information agent is making any recommendation as to whether or not holders should tender their notes in connection with the offers.

Forward-Looking Statements

This news release contains forward-looking information about 3M’s financial results and estimates and business prospects that involve substantial risks and uncertainties. You can identify these statements by the use of words such as “anticipate,” “estimate,” “expect,” “aim,” “project,” “intend,” “plan,” “believe,” “will,” “should,” “could,” “target,” “forecast” and other words and terms of similar meaning in connection with any discussion of future operating or financial performance or business plans or prospects. Among the factors that could cause actual results to differ materially are the following: (1) worldwide economic, political, and capital markets conditions and other factors beyond 3M’s control, including natural and other disasters or climate change affecting the operations of 3M or its customers and suppliers; (2) the 3M’s credit ratings and its cost of capital; (3) competitive conditions and customer preferences; (4) foreign currency exchange rates and fluctuations in those rates; (5) the timing and market acceptance of new product offerings; (6) the availability and cost of purchased components, compounds, raw materials and energy (including oil and natural gas and their derivatives) due to shortages, increased demand or supply interruptions (including those caused by natural and other disasters and other events); (7) the impact of acquisitions, strategic alliances, divestitures, and other unusual events resulting from portfolio management actions and other evolving business strategies, and possible organizational restructuring; (8) generating fewer productivity improvements than estimated; (9) unanticipated problems or delays with the phased implementation of a global enterprise resource planning (ERP) system, or security breaches and other disruptions to the 3M’s information technology infrastructure; (10) financial market risks that may affect 3M’s funding obligations under defined benefit pension and postretirement plans; and (11) legal proceedings, including significant developments that could occur in the legal and regulatory proceedings described in the 3M’s Annual Report on Form 10-K for the year ended Dec. 31, 2016, and any subsequent quarterly reports on Form 10-Q (the “Reports”). Changes in such assumptions or factors could produce significantly different results. A further description of these factors is located in the Reports under “Cautionary Note Concerning Factors That May Affect Future Results” and “Risk Factors” in Part I, Items 1 and 1A (Annual Report) and in Part I, Item 2 and Part II, Item 1A (Quarterly Reports). The information contained in this news release is as of the date indicated. 3M assumes no obligation to update any forward-looking