MMM

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Exhibit 99.1

3M Reports Third-Quarter 2026 Results; Raises Full-Year EPS Guidance

•Q3 GAAP sales of $6.6 billion, up 1.0%; operating margin of 23.7%, up 150 bps; EPS of $2.63, up 70%, all YoY

◦Adjusted sales of $6.6 billion with organic growth of 3.3% YoY

◦Adjusted operating margin of 26.2% on new basis1, up 110 bps YoY

◦Adjusted EPS of $2.50 on new basis1, up 12% YoY

•Q3 operating cash flow of $0.5 billion with adjusted free cash flow of $1.2 billion

•2026 adjusted EPS guidance raised to $9.10 to $9.15, incorporating new basis1

ST. PAUL, Minn. – Oct. 20, 2026 − 3M (NYSE: MMM) today reported third-quarter results.

“We delivered another quarter of strong results, including solid sales growth, continued margin expansion, double-digit EPS growth, and robust free cash flow,” said William Brown, 3M Chairman and CEO. “Improving productivity through structural transformation and a stronger pipeline of differentiated technologies reinforce our confidence in the full-year outlook and long-term growth and margin potential. I want to thank the 3M team for their focus on customers and disciplined execution, which continues to strengthen our performance and create shareholder value.”

Third-quarter highlights:

Q3 2026

Q3 2025

GAAP EPS$2.63 $1.55

Special items:

Loss on business divestitures— 0.30

(Increase) decrease in value of Solventum ownership(0.60)0.13

Net costs for significant litigation and PFAS exit0.19 0.19

Transformation costs0.08 0.02

Amortization and business acquisition-related costs0.20 0.04

Adjusted EPS$2.50 $2.23

Memo:

GAAP operating income margin23.7 %22.2 %

Adjusted operating income margin26.2 %25.1 %

•Adjusted (non-GAAP) reporting updated to treat amortization of intangible assets as a special item for all periods presented; no material year-on-year impact on new basis.

•GAAP EPS of $2.63 and operating margin of 23.7%.

•Adjusted EPS of $2.50, up 12% year-on-year.

•Adjusted operating income margin of 26.2%, up 110 basis points year-on-year.

GAAPAdjusted (non-GAAP)

Net sales (billions)$6.6$6.6

Sales change

Total sales 1.0%4.2%

Components of sales change:

Organic sales0.23.3

Acquisitions/divestitures0.90.9

Translation(0.1)—

Adjusted sales excludes manufactured PFAS products.

•Sales of $6.6 billion, up 1.0% year-on-year with organic sales up 0.2% year-on-year.

•Adjusted sales of $6.6 billion, up 4.2% year-on-year with adjusted organic sales up 3.3% year-on-year.

•3M returned $0.6 billion to shareholders via dividends and share repurchases.

•Cash from operations of $0.5 billion.

•Adjusted free cash flow of $1.2 billion.

1New basis: Updated non-GAAP reporting treats intangible asset amortization as a special item for all periods presented. The change increases base Q3 adjusted operating income margin by approximately 40 bps and adjusted EPS by approximately $0.04. Year-on-year comparisons are not materially impacted as all periods are reflected on the same basis.

1

Strategic and operational highlights

The following are recently announced highlights:

•3M entered into an expanded strategic commercial relationship with Amazon to deploy and scale 3M’s optical connectivity and other Data Center related products. 3M issued a warrant to Amazon to purchase up to 3.2 million shares of 3M common stock based upon the achievement of $6 billion in cumulative sales of optical connectivity and other Data Center related products over the next seven years, and other event-based milestones.

•3M is collaborating with Genius Electronic Optical Co., Ltd. (GSEO), an optical technology company, to advance technology development and manufacturing for 3M's Expanded Beam Optics (EBO) solutions. In support of these efforts, 3M is investing to acquire ~4.7% of GSEO's common shares. The collaboration brings together 3M's EBO technology leadership, optical interconnect expertise, materials science, manufacturing scale and customer relationships with GSEO's precision optics manufacturing capabilities and production scale.

•3M introduced Cooling Film technology for fleet and rail applications, expanding its portfolio of thermal management solutions for transportation customers. Applied to vehicle roofs, the highly reflective performance film uses thermal management technology to reduce heat buildup and help keep interiors noticeably cooler.

•3M showcased how its materials science expertise supports innovation in golf equipment through its collaboration with PING. By pairing PING’s expertise in club design and custom manufacturing with 3M’s broad portfolio of materials science solutions, the two companies can collaborate on engineering solutions that turn complex technical challenges into repeatable, high-quality results on the course.

•3M and BOE established a joint innovation laboratory to accelerate next-generation display technology development. The joint research and development platform brings together BOE’s display innovation and end-u

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Exhibit 99.1

3M Reports Second-Quarter 2026 Results; Increases Full-Year Guidance

•Q2 GAAP sales of $6.5 billion, up 2.4%; operating margin of 15.1%, down 290 bps; EPS of $1.78, up 33%, all YoY

◦Adjusted sales of $6.5 billion with organic growth of 5.4% YoY

◦Adjusted operating margin of 24.9%, up 40 bps YoY

◦Adjusted EPS of $2.40, up 11% YoY

•Q2 operating cash flow of $1.0 billion with adjusted free cash flow of $1.3 billion

•2026 adjusted EPS guidance increased from $8.50 - $8.70 to $8.80 - $8.95

ST. PAUL, Minn. – July 21, 2026 − 3M (NYSE: MMM) today reported second-quarter results.

“We delivered a strong second quarter, exceeding expectations with mid-single-digit sales growth, robust operating margins of about 25%, and double-digit EPS growth, reflecting the progress we’re making on our strategic priorities and building a higher-performing company,” said William Brown, 3M Chairman and CEO. “As a result of our strong first-half performance and continued momentum, we are increasing our full-year guidance and remain confident in our ability to create long-term value for shareholders. I want to thank the 3M team for their disciplined execution, dedication, and relentless focus on delivering innovative solutions for our customers.”

Second-quarter highlights:

Q2 2026

Q2 2025

GAAP EPS$1.78 $1.34

Special items:

Loss on business divestitures0.61 —

(Increase) decrease in value of Solventum ownership(0.60)0.01

Net costs for significant litigation and PFAS exit0.44 0.79

Transformation costs0.15 —

Business acquisition-related costs0.02 —

Manufactured PFAS products— 0.02

Adjusted EPS$2.40 $2.16

Memo:

GAAP operating income margin15.1 %18.0 %

Adjusted operating income margin24.9 %24.5 %

•GAAP EPS of $1.78 and operating margin of 15.1%.

•Adjusted EPS of $2.40, up 11% year-on-year.

•Adjusted operating income margin of 24.9%, an increase of 40 basis points year-on-year.

GAAPAdjusted (non-GAAP)

Net sales (billions)$6.5$6.5

Sales change

Total sales 2.4%5.5%

Components of sales change:

Organic sales2.35.4

Acquisitions/divestitures(0.6)(0.7)

Translation0.70.8

Adjusted sales excludes manufactured PFAS products.

•Sales of $6.5 billion, up 2.4% year-on-year with organic sales up 2.3% year-on-year.

•Adjusted sales of $6.5 billion, up 5.5% year-on-year with adjusted organic sales up 5.4% year-on-year.

•3M returned $1.4 billion to shareholders via dividends and share repurchases.

•Cash from operations of $1.0 billion.

•Adjusted free cash flow of $1.3 billion.

1

Strategic and operational highlights

The following are recently announced highlights:

•3M and Microsoft announced a strategic partnership to advance AI data center infrastructure and enterprise transformation. Microsoft becomes the first announced hyperscale cloud provider to deploy 3M Expanded Beam Optics (EBO) technology. Microsoft is a member of the EBO Multi-Source Agreement (MSA) which 3M helped establish to support standardization and broader industry adoption of EBO technology.

•3M and Airbus signed a long-term agreement to deliver advanced insulation technologies for the A220, improving cabin comfort while supporting aircraft performance and efficiency.

•3M has entered a multi‑year global partnership as the Cadillac Formula 1® Team’s Official Material Science Partner, leveraging advanced materials, manufacturing and testing to accelerate car development, enhance performance and streamline operations in one of the most demanding racing environments.

•3M launched Ask 3M, an AI digital assistant powered by AWS that gives customers fast, self-service access to technical expertise, enabling more efficient evaluation of materials, product comparisons, and resolution of application challenges.

•As a part of NASA’s Artemis II mission, the crew of the Orion capsule used 3M™ PELTOR™ ComTac™ VI Tactical Headsets for communication. These headsets are designed to enable communication in extreme environments and are one way 3M is supporting next-generation space exploration.

Updated full-year 2026 guidance1

3M updated its full-year 2026 guidance given the company’s performance in the first half of the year.

•Adjusted total sales growth2 of >4.5 percent, reflecting adjusted organic sales growth2 of >3.5 percent.

•Adjusted operating income margin expansion2 of 70 bps to 80 bps.

•Adjusted EPS2 in the range of $8.80 to $8.95.

•Adjusted operating cash flow2 of $5.8 to $6.0 billion, contributing to >100 percent adjusted free cash flow conversion2.

1Guidance does not yet reflect the acquisition of Madison Fire & Rescue, which closed on July 1, 2026.

2As further discussed at 5 within the "Supplemental Financial Information Non-GAAP Measures" sections, 3M cannot, without unreasonable effort, forecast certain items required to develop meaningful comparable GAAP financial measures and, therefore, does not provide them on a forward-looking basis reflecting these items.

Conference call

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Exhibit 99.1

3M Reports First-Quarter 2026 Results

•Q1 GAAP sales of $6.0 billion, up 1.3%; operating margin of 23.2%, up 230 bps; EPS of $1.23, down 40%, all YoY

◦Adjusted sales of $6.0 billion with organic growth of 1.2% YoY

◦Adjusted operating margin of 23.8%, up 30 bps YoY

◦Adjusted EPS of $2.14, up 14% YoY

•Q1 operating cash flow of $0.6 billion with adjusted free cash flow of $0.5 billion

•Reiterates full-year 2026 guidance

ST. PAUL, Minn. – April 21, 2026 − 3M (NYSE: MMM) today reported first-quarter results.

“We are executing on 3M’s value creation framework to build a stronger company,” said William Brown, 3M Chairman and CEO. “Our focus remains on improving execution of the fundamentals and transforming the company by simplifying and standardizing our processes and footprint and reshaping the portfolio. Together, these actions will drive structurally higher growth and stronger margin performance, while improving enterprise resilience and predictability.”

Brown added, “We had a good start to the year, and despite operating in a volatile environment, we remain confident in achieving our 2026 guidance while staying committed to our long-term strategy - investing in growth, driving operational performance, and returning cash to shareholders.”

First-quarter highlights:

Q1 2026

Q1 2025

GAAP EPS

$1.23 $2.04

Special items:

Net costs (benefit) from significant litigation (0.04)0.41

Loss on business divestitures 0.01 —

Manufactured PFAS products0.18 0.06

(Increase) decrease in value of Solventum ownership0.67 (0.63)

Transformation costs0.09 —

Adjusted EPS $2.14 $1.88

Memo:

GAAP operating income margin23.2 %20.9 %

Adjusted operating income margin23.8 %23.5 %

•GAAP EPS of $1.23 and operating margin of 23.2%.

•Adjusted EPS of $2.14, up 14% year-on-year.

•Adjusted operating income margin of 23.8%, an increase of 30 basis points year-on-year.

GAAPAdjusted (non-GAAP)

Net sales (billions)$6.0$6.0

Sales change

Total sales 1.3%3.9%

Components of sales change:

Organic sales(1.4)1.2

Acquisitions/divestitures(0.1)(0.1)

Translation2.82.8

Adjusted sales excludes manufactured PFAS products.

•Sales of $6.0 billion, up 1.3% year-on-year with organic sales down 1.4% year-on-year.

•Adjusted sales of $6.0 billion, up 3.9% year-on-year with adjusted organic sales up 1.2% year-on-year.

•3M returned $2.4 billion to shareholders via dividends and share repurchases.

•Cash from operations of $0.6 billion.

•Adjusted free cash flow of $0.5 billion.

1

Full-year 2026 guidance

3M reiterated the following full-year 2026 expectations.

•Adjusted total sales growth1 of ~4 percent, reflecting adjusted organic sales growth1 of ~3 percent.

•Adjusted operating income margin expansion1 of 70 bps to 80 bps.

•Adjusted EPS1 in the range of $8.50 to $8.70.

•Adjusted operating cash flow1 of $5.6 to $5.8 billion, contributing to >100 percent adjusted free cash flow conversion1.

1As further discussed at 4 within the "Supplemental Financial Information Non-GAAP Measures" sections, 3M cannot, without unreasonable effort, forecast certain items required to develop meaningful comparable GAAP financial measures and, therefore, does not provide them on a forward-looking basis reflecting these items.

Conference call

3M will conduct an investor teleconference at 9 a.m. ET (8 a.m. CT) today. Investors can access this conference via the following:

•Live webcast at https://investors.3M.com

•Webcast replay at https://investors.3m.com/financials/quarterly-earnings

Forward-looking statements

Certain statements in this document, as well as other filings we make with the United States Securities and Exchange Commission (“SEC”) and other written and oral information we release are considered "forward-looking statements" under the federal securities laws, including the Private Securities Litigation Reform Act of 1995, as amended (the "PSLRA"). Forward-looking statements may appear throughout this document and are typically identified by the words "aim," "anticipate," "believe," "can," "continue," "could," "estimate," "evaluate," "expect," "forecast," "future," "goal," "guidance," "impact," "initial," "intend," "likely," "may," "outlook," "plan," "possible," "potential," "predict," "probable," "project," "seek," "should," "strategy," "target," "will," "would," and other words that are similar to, or have the opposite meanings, of those words.

All forward-looking statements are intended to enjoy the protection of the PSLRA’s safe harbor for forward looking-statements, as well as the protections provided by other securities laws. Forward-looking statements speak only as of the date they are made and the Company assumes no obligation to update or revise any forward-looking statements. Readers are cautioned not to place undue reliance on any of these forward-looking statements.

Although the Company believes it has a reasonable basis for the forward-looking statements it