EXHIBIT 99

This Current Report on Form 8-K is being furnished to include supplemental unaudited historical information that was updated as a result of the following:

•Changes in the measure of segment operating performance used by 3M’s chief operating decision maker impacting 3M’s segment reporting.

•Changes to non-GAAP measures - certain amounts adjusted for special items, adjusted free cash flow, adjusted free cash flow conversion, and adjusted EBITDA. The information reflects expanding the extent of special item adjustments to include the sales and estimates of income (including exit costs) and associated activity regarding manufactured PFAS products.

The Company did not operate using the new measure of segment operating performance until the first quarter of 2023 and will begin to report comparative results under this basis with the filing of its Quarterly Report on Form 10-Q for the quarter ending March 31, 2023. Until 3M’s interim financial statements as of and for the quarter ending March 31, 2023 are issued, amounts on the updated basis are not in accordance with U.S. GAAP and, as a result, are considered non-GAAP measures.

The Company is furnishing this information as it believes it is useful to investors to aid in understanding, on a timely basis, the impacts of these changes on historical periods as they prepare to consider 3M’s future results on the updated basis.

As used herein, the term “3M” or “Company” includes 3M Company and its subsidiaries unless the context indicates otherwise. The information contained in this Current Report shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be incorporated by reference into a filing under the Securities Act of 1933, or the Exchange Act.

Changes in the measure of segment operating performance used by 3M’s chief operating decision maker (CODM)

Note 19 to 3M’s consolidated financial statements in its 2022 Annual Report on Form 10-K describes 3M’s business segments and measure of segment operating performance used by 3M’s CODM.

Effective in the first quarter of 2023, the measure of segment operating performance used by 3M’s CODM changed and, as a result, 3M’s disclosed measure of segment profit/loss (business segment operating income) will be updated for all comparative periods presented. The change to business segment sales and operating income aligns with the update to how the CODM assesses performance and allocates resources for the Company’s business segments. The changes included the following:

Reflecting gains/losses from sale of property, plant and equipment (PPE) and other assets within Corporate and Unallocated Change

3M updated its business segment operating performance measure to reflect all gains/losses from sales of PPE and other assets within Corporate and Unallocated. Previously, certain of these gains/losses were included in 3M’s business segments’ operating performance. In aggregate, for example relative to 2022, this change included ascribing approximately $135 million of gains previously included in the various business segments to Corporate and Unallocated as further reflected in the tables that follow.

Movement of certain businesses between segments

The businesses associated with two groups of products (each with approximately $25 million in sales) were realigned with one moving from the Consumer business segment to the Health Care business segment and the other moving from the Health Care business segment to the Consumer business segment.

Also effective in the first quarter of 2023, the Consumer business re-aligned from four divisions to the following three divisions: Home, Health and Auto Care; Construction and Home Improvement Markets; and Stationery and Office.

The tables below provide additional information with respect to the expected impact of the changes described above on previously reported segment and disaggregated revenue information. 3M discloses business segment operating income as its measure of segment profit/loss, reconciled to both total 3M operating income and income before taxes. 

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EXHIBIT 99

						Updated Basis (non-GAAP measure)*																								Total Year
Net Sales (Millions)						First Quarter						Second Quarter						Third Quarter						Fourth Quarter						Previously Reported						Impact of Changes						Updated basis (non-GAAP measure)*
Safety and Industrial
2022						$	3,051					$	2,924					$	2,894					$	2,735					$	11,604					$	—					$	11,604
2021						3,099						3,029						3,005						2,848						11,981						—						11,981
2020																														10,972						—						10,972
Transportation and Electronics
2022						$	2,340					$	2,268					$	2,239					$	2,055					$	8,902					$	—					$	8,902
2021						2,396						2,355						2,327						2,184						9,262						—						9,262
2020																														8,406						—						8,406
Health Care
2022						$	2,128					$	2,179					$	2,076					$	2,044					$	8,421					$	6					$	8,427
2021						2,071						2,166						2,173						2,191						8,597						4						8,601
2020																														7,832						3						7,835
Consumer
2022						$	1,309					$	1,330					$	1,409					$	1,244					$	5,298					$	(6)					$	5,292
2021						1,287						1,399						1,434						1,389						5,513						(4)						5,509
2020																														4,976						(3)						4,973
Corporate and Unallocated
2022						$	1					$	1					$	1					$	1					$	4					$	—					$	4
2021						(2)						1						3						—						2						—						2
2020																														(2)						—						(2)
Total Company
2022						$	8,829					$	8,702					$	8,619					$	8,079					$	34,229					$	—					$	34,229
2021						8,851						8,950						8,942						8,612						35,355						—						35,355
2020																														32,184						—						32,184

*     Amounts reflect first quarter of 2023 changes in measure of segment operating performance as described herein. Until 3M’s interim financial statements as of and for the quarter ending March 31, 2023 are issued, amounts on the updated basis are not in accordance with U.S. GAAP and, as a result, are considered non-GAAP measures.

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EXHIBIT 99

						Updated Basis (non-GAAP measure)*																								Total Year
Operating Performance (millions)						First Quarter						Second Quarter						Third Quarter						Fourth Quarter						Previously Reported						Impact of Changes						Updated basis (non-GAAP measure)*
Safety and Industrial
2022						$	627					$	(707)					$	652					$	563					$	1,199					$	(64)					$	1,135
2021						747						661						563						489						2,466						(6)						2,460
2020																														2,588						(56)						2,532
Transportation and Electronics
2022						$	464					$	475					$	475					$	(441)					$	1,012					$	(39)					$	973
2021						555						506						435						373						1,880						(11)						1,869
2020																														1,701						(11)						1,690
Health Care
2022						$	445					$	492					$	450					$	412					$	1,815					$	(16)					$	1,799
2021						465						547						508						514						2,037						(3)						2,034
2020																														1,662						(1)						1,661
Consumer
2022						$	219					$	248					$	299					$	212					$	994					$	(16)					$	978
2021						268						291						310						295						1,162						2						1,164
2020																														1,119						(2)						1,117
Total business segment operating income
2022						$	1,755					$	508					$	1,876					$	746					$	5,020					$	(135)					$	4,885
2021						2,035						2,005						1,816						1,671						7,545						(18)						7,527
2020																														7,070						(70)						7,000
Corporate and Unallocated
2022						$	(114)					$	(398)					$	2,280					$	(114)					$	1,519					$	135					$	1,654
2021						(41)						(34)						(28)						(55)						(176)						18						(158)
2020																														91						70						161
Total Company operating income
2022						$	1,641					$	110					$	4,156					$	632					$	6,539					$	—					$	6,539
2021						1,994						1,971						1,788						1,616						7,369						—						7,369
2020																														7,161						—						7,161
Other expense/(income), net
2022																														$	147					$	—					$	147
2021																														165						—						165
2020																														366						—						366
Income before income taxes
2022																														$	6,392					$	—					$	6,392
2021																														7,204						—						7,204
2020																														6,795						—						6,795

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EXHIBIT 99

Disaggregated revenue information
						Updated Basis (non-GAAP measure)*
						Year ended December 31,
Net Sales (Millions)						2022						2021						2020
Abrasives						$	1,343					$	1,296					$	1,077
Automotive Aftermarket						1,209						1,164						1,028
Closure and Masking Systems						1,046						1,033						993
Electrical Markets						1,304						1,229						1,093
Industrial Adhesives and Tapes						2,331						2,353						2,000
Personal Safety						3,916						4,470						4,408
Roofing Granules						455						428						389
Other Safety and Industrial						—						8						(16)
Total Safety and Industrial Business Segment						11,604						11,981						10,972
Advanced Materials						1,205						1,200						1,029
Automotive and Aerospace						1,754						1,756						1,522
Commercial Solutions						1,751						1,717						1,486
Electronics						3,359						3,673						3,497
Transportation Safety						833						907						880
Other Transportation and Electronics						—						9						(8)
Total Transportation and Electronics Business Segment						8,902						9,262						8,406
Drug Delivery						—						—						146
Food Safety						244						368						337
Health Information Systems						1,259						1,220						1,140
Medical Solutions						4,581						4,632						4,288
Oral Care						1,327						1,396						1,052
Separation and Purification Sciences						992						984						870
Other Health Care						24						1						2
Total Health Care Business Group						8,427						8,601						7,835
Home, Health and Auto Care						1,655						1,741						1,649
Construction and Home Improvement Markets						2,346						2,465						2,191
Stationery and Office						1,291						1,306						1,132
Other Consumer						—						(3)						1
Total Consumer Business Group						5,292						5,509						4,973
Corporate and Unallocated						4						2						(2)
Total Company						$	34,229					$	35,355					$	32,184

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EXHIBIT 99

Changes to Non-GAAP Measures - Certain Amounts Adjusted for Special Items, Adjusted Free Cash Flow, Adjusted Free Cash Flow Conversion, and Adjusted EBITDA

In 2023, 3M is changing certain of its non-GAAP measures by adjusting for the results of manufactured PFAS products in arriving at results, adjusted for special items. In the fourth quarter of 2022, 3M record a charge for PFAS manufacturing exit costs and included it as an adjustment in arriving at results, adjusted for special items. The 2023 non-GAAP measure change involves expanding the extent of adjustment to include the sales and estimates of income (including exit costs) and associated activity regarding manufactured PFAS products that 3M plans to exit by the end of 2025. This change also impacts other non-GAAP measures such as adjusted free cash flow, adjusted free cash flow conversion and adjusted EBITDA to similarly include relevant special item adjustments for manufactured PFAS products.

The discussion and tables below include information with respect to historical amounts adjusted for special items (non-GAAP measures) reflective of the changes in measure of segment operating performance and non-GAAP measures described above.

Certain amounts adjusted for special items - (non-GAAP measures):

						Year ended December 31, 2020
(Dollars in millions, except per share amounts)						Sales						Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*												$	2,532					23.1		%
Adjustments for special items:
Net costs for significant litigation												205
Total special items												205
Adjusted amounts (non-GAAP measures) (a)												$	2,737					25.0		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	8,406					$	1,690					20.1		%
Adjustments for special items:
Manufactured PFAS products						(1,063)						(108)
Total special items						(1,063)						(108)
Adjusted amounts (non-GAAP measures) (a)						$	7,343					$	1,582					21.5		%
Total Company
Updated basis (non-GAAP measure)*						$	32,184					$	7,161					22.3		%				$	6,795					$	1,337					19.7		%				$	5,449					$	9.36
Adjustments for special items:
Net costs for significant litigation						—						353												353						136												217						0.37
Manufactured PFAS products						(1,063)						(108)												(108)						(23)												(85)						(0.15)
Gain on business divestitures						—						(389)												(389)						(86)												(303)						(0.52)
Divestiture-related restructuring actions						—						55												55						9												46						0.08
Total special items						(1,063)						(89)												(89)						36												(125)						(0.22)
Adjusted amounts (non-GAAP measures) (a)						$	31,121					$	7,072					22.7		%				$	6,706					$	1,373					20.5		%				$	5,324					$	9.14

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EXHIBIT 99

						Year ended December 31, 2021
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	2,460					20.5		%
Adjustments for special items:
Net costs for significant litigation																		249
Total special items																		249
Adjusted amounts (non-GAAP measures) (a)																		$	2,709					22.6		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	9,262											$	1,869					20.2		%
Adjustments for special items:
Manufactured PFAS products						(1,258)												(135)
Total special items						(1,258)												(135)
Adjusted amounts (non-GAAP measures) (a)						$	8,004											$	1,734					21.7		%
Total Company
Updated basis (non-GAAP measure)*						$	35,355											$	7,369					20.8		%				$	7,204					$	1,285					17.8		%				$	5,921					$	10.12
Adjustments for special items:
Net costs for significant litigation						—												463												$	463					$	104											$	359					0.61
Manufactured PFAS products						(1,258)												(135)												$	(135)					$	(29)											$	(106)					(0.18)
Total special items						(1,258)												328												$	328					$	75											$	253					0.43
Adjusted amounts (non-GAAP measures (a)						$	34,097											$	7,697					22.6		%				$	7,532					$	1,360					18.1		%				$	6,174					$	10.55

						Year ended December 31, 2022
(Dollars in millions, except per share amounts)						Sales						Sales Change						Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share						Earnings per diluted share percent change
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	1,135					9.8		%
Adjustments for special items:
Net costs for significant litigation																		1,414
Total special items																		1,414
Adjusted amounts (non-GAAP measures) (a)																		$	2,549					22.0		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	8,902					(3.9)		%				$	973					10.9		%
Adjustments for special items:
Manufactured PFAS products						(1,351)												631
Total special items						(1,351)												631
Adjusted amounts (non-GAAP measures) (a)						$	7,551					(5.6)		%				$	1,604					21.2		%
Total Company
Updated basis (non-GAAP measure)*						$	34,229					(3.2)		%				$	6,539					19.1		%				$	6,392					$	612					9.6		%				$	5,777					10.18						1		%
Adjustments for special items:
Net costs for significant litigation						—												2,291												2,291						476												1,815						3.20
Manufactured PFAS products						(1,351)												631												631						121												510						0.90
Gain on business divestitures						—												(2,724)												(2,724)						(39)												(2,685)						(4.73)
Divestiture-related restructuring actions						—												41												41						9												32						0.05
Divestiture costs						—												60												60						13												47						0.08
Russia exit charges						—												109												109						(2)												111						0.20
Total special items						(1,351)												408												408						578												(170)						(0.30)
Adjusted amounts (non-GAAP measures) (a)						$	32,878					(3.6)		%				$	6,947					21.1		%				$	6,800					$	1,190					17.5		%				$	5,607					$	9.88					(6)		%

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EXHIBIT 99

						Three months ended March 31, 2021
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	747					24.1		%
Adjustments for special items:
Net costs for significant litigation																		65
Total special items																		65
Adjusted amounts (non-GAAP measures) (a)																		$	812					26.2		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,396											$	555					23.2		%
Adjustments for special items:
Manufactured PFAS products						(331)												(34)
Total special items						(331)												(34)
Adjusted amounts (non-GAAP measures) (a)						$	2,065											$	521					25.3		%
Total Company
Updated basis (non-GAAP measure)*						$	8,851											$	1,994					22.5		%				$	1,945					$	319					16.4		%				$	1,624					2.77
Adjustments for special items:
Net costs for significant litigation						—												135												135						32												103						0.18
Manufactured PFAS products						(331)												(34)												(34)						(8)												(26)						(0.05)
Total special items						(331)												101												101						24												77						0.13
Adjusted amounts (non-GAAP measures) (a)						$	8,520											$	2,095					24.6		%				$	2,046					$	343					16.8		%				$	1,701					$	2.90

						Three months ended March 31, 2022
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	627					20.6		%
Adjustments for special items:
Net costs for significant litigation																		63
Total special items																		63
Adjusted amounts (non-GAAP measures) (a)																		$	690					22.6		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,340											$	464					19.8		%
Adjustments for special items:
Manufactured PFAS products						(320)												(16)
Total special items						(320)												(16)
Adjusted amounts (non-GAAP measures) (a)						$	2,020											$	448					22.2		%
Total Company
Updated basis (non-GAAP measure)*						$	8,829											$	1,641					18.6		%				$	1,603					$	302					18.8		%				$	1,299					2.26
Adjustments for special items:
Net costs for significant litigation						—												250												250						25												225						0.39
Manufactured PFAS products						(320)												(16)												(16)						(4)												(12)						(0.02)
Total special items						(320)												234												234						21												213						0.37
Adjusted amounts (non-GAAP measures) (a)						$	8,509											$	1,875					22.0		%				$	1,837					$	323					17.5		%				$	1,512					$	2.63

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EXHIBIT 99

						Three months ended June 30, 2021
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	661					21.8		%
Adjustments for special items:
Net costs for significant litigation																		52
Total special items																		52
Adjusted amounts (non-GAAP measures) (a)																		$	713					23.6		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,355											$	506					21.5		%
Adjustments for special items:
Manufactured PFAS products						(323)												(44)
Total special items						(323)												(44)
Adjusted amounts (non-GAAP measures) (a)						$	2,032											$	462					22.7		%
Total Company
Updated basis (non-GAAP measure)*						$	8,950											$	1,971					22.0		%				$	1,938					$	415					21.5		%				$	1,524					$	2.59
Adjustments for special items:
Net costs for significant litigation						—												127												127						30												97						0.16
Manufactured PFAS products						(323)												(44)												(44)						(10)												(34)						(0.05)
Total special items						(323)												83												83						20												63						0.11
Adjusted amounts (non-GAAP measures) (a)						$	8,627											$	2,054					23.8		%				$	2,021					$	435					21.6		%				$	1,587					$	2.70

						Three months ended June 30, 2022
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	(707)					(24.2)		%
Adjustments for special items:
Net costs for significant litigation																		1,337
Total special items																		1,337
Adjusted amounts (non-GAAP measures) (a)																		$	630					21.5		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,268											$	475					21.0		%
Adjustments for special items:
Manufactured PFAS products						(318)												(20)
Total special items						(318)												(20)
Adjusted amounts (non-GAAP measures) (a)						$	1,950											$	455					23.4		%
Total Company
Updated basis (non-GAAP measure)*						$	8,702											$	110					1.3		%				$	60					$	(23)					(38.3)		%				$	78					$	0.14
Adjustments for special items:
Net costs for significant litigation						—												1,716												1,716						374												1,342						2.34
Manufactured PFAS products						(318)												(20)												(20)						(6)												(14)						(0.03)
Total special items						(318)												1,696												1,696						368												1,328						2.31
Adjusted amounts (non-GAAP measures) (a)						$	8,384											$	1,806					21.6		%				$	1,756					$	345					19.8		%				$	1,406					$	2.45

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EXHIBIT 99

						Three months ended September 30, 2021
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	563					18.7		%
Adjustments for special items:
Net costs for significant litigation																		60
Total special items																		60
Adjusted amounts (non-GAAP measures) (a)																		$	623					20.7		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,327											$	435					18.7		%
Adjustments for special items:
Manufactured PFAS products						(321)												(49)
Total special items						(321)												(49)
Adjusted amounts (non-GAAP measures) (a)						$	2,006											$	386					19.2		%
Total Company
Updated basis (non-GAAP measure)*						$	8,942											$	1,788					20.0		%				$	1,757					$	324					18.4		%				$	1,434					2.45
Adjustments for special items:
Net costs for significant litigation						—												97												97						18												79						0.13
Manufactured PFAS products						(321)												(49)												(49)						(11)												(38)						(0.06)
Total special items						(321)												48												48						7												41						0.07
Adjusted amounts (non-GAAP measures) (a)						$	8,621											$	1,836					21.3		%				$	1,805					$	331					18.4		%				$	1,475					$	2.52

						Three months ended September 30, 2022
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	652					22.5		%
Adjustments for special items:
Net costs for significant litigation																		21
Total special items																		21
Adjusted amounts (non-GAAP measures) (a)																		$	673					23.2		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,239											$	475					21.2		%
Adjustments for special items:
Manufactured PFAS products						(350)												(65)
Total special items						(350)												(65)
Adjusted amounts (non-GAAP measures) (a)						$	1,889											$	410					21.7		%
Total Company
Updated basis (non-GAAP measure)*						$	8,619											$	4,156					48.2		%				$	4,132					$	271					6.6		%				$	3,859					6.77
Adjustments for special items:
Net costs for significant litigation						—												267												267						57												210						0.37
Manufactured PFAS products						(350)												(65)												(65)						(16)												(49)						(0.09)
Gain on business divestitures						—												(2,724)												(2,724)						(39)												(2,685)						(4.71)
Divestiture-related restructuring actions						—												41												41						9												32						0.05
Divestiture costs						—												6												6						2												4						0.01
Russia exit charges						—												109												109						(2)												111						0.20
Total special items						(350)												(2,366)												(2,366)						11												(2,377)						(4.17)
Adjusted amounts (non-GAAP measures) (a)						$	8,269											$	1,790					21.6		%				$	1,766					$	282					15.9		%				$	1,482					$	2.60

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EXHIBIT 99

						Three months ended December 31, 2021
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	489					17.2		%
Adjustments for special items:
Net costs for significant litigation																		72
Total special items																		72
Adjusted amounts (non-GAAP measures) (a)																		$	561					19.7		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,184											$	373					17.1		%
Adjustments for special items:
Manufactured PFAS products						(283)												(8)
Total special items						(283)												(8)
Adjusted amounts (non-GAAP measures) (a)						$	1,901											$	365					19.2		%
Total Company
Updated basis (non-GAAP measure)*						$	8,612											$	1,616					18.8		%				$	1,564					$	227					14.5		%				$	1,339					2.31
Adjustments for special items:
Net costs for significant litigation						—												104												104						24												80						0.14
Manufactured PFAS products						(283)												(8)												(8)						—												(8)						(0.02)
Total special items						(283)												96												96						24												72						0.12
Adjusted amounts (non-GAAP measures (a)						$	8,329											$	1,712					20.5		%				$	1,660					$	251					15.0		%				$	1,411					$	2.43

						Three months December 31, 2022
(Dollars in millions, except per share amounts)						Sales												Operating Income						Operating Income Margin						Income Before Taxes						Provision for Income Taxes						Effective tax rate						Net Income Attributable to 3M						Earnings per Diluted Share
Safety and Industrial
Updated basis (non-GAAP measure)*																		$	563					20.6		%
Adjustments for special items:
Net costs for significant litigation																		(7)
Total special items																		(7)
Adjusted amounts (non-GAAP measures) (a)																		$	556					20.4		%
Transportation and Electronics
Updated basis (non-GAAP measure)*						$	2,055											$	(441)					(21.4)		%
Adjustments for special items:
Manufactured PFAS products						(363)												732
Total special items						(363)												732
Adjusted amounts (non-GAAP measures) (a)						$	1,692											$	291					17.1		%
Total Company
Updated basis (non-GAAP measure)*						$	8,079											$	632					7.8		%				$	597					$	62					10.5		%				$	541					0.98
Adjustments for special items:
Net costs for significant litigation						—												58												58						20												38						0.07
Manufactured PFAS products						(363)												732												732						147												585						1.05
Divestiture costs						—												54												54						11												43						0.08
Total special items						(363)												844												844						178												666						1.20
Adjusted amounts (non-GAAP measures) (a)						$	7,716											$	1,476					19.1		%				$	1,441					$	240					16.6		%				$	1,207					$	2.18

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EXHIBIT 99

						Year ended December 31, 2022
Sales Change (b)						Organic sales						Acquisitions						Divestitures						Translation						Total sales change
Total Company						1.2		%				—		%				(0.5)		%				(3.9)		%				(3.2)		%
Remove manufactured PFAS products impact						(0.4)						—						—						—						(0.4)
Adjusted total Company (non-GAAP measures) (a)						0.8		%				—		%				(0.5)		%				(3.9)		%				(3.6)		%
Transportation and Electronics						1.2		%				—		%				(0.5)		%				(4.6)		%				(3.9)		%
Remove manufactured PFAS products impact						(2.2)						—						—						0.5						(1.7)
Adjusted Transportation and Electronics (non-GAAP measures) (a)						(1.0)		%				—		%				(0.5)		%				(4.1)		%				(5.6)		%

(a)     In addition to reporting financial results in accordance with U.S. GAAP, 3M also provides non-GAAP measures that adjust for the impacts of special items. Special items for the periods presented include the items described in the section entitled “Description of Special Items”. Net sales (and sales change), operating income, segment operating income, operating income margin, income before taxes, provision for income taxes, effective tax rate, net income, and earnings per share are all measures for which 3M provides the reported GAAP measure and a measure adjusted for special items. The adjusted measures are not in accordance with, nor are they a substitute for, GAAP measures. The Company considers these non-GAAP measures in evaluating and managing its operations. The Company believes that discussion of results adjusted for special items is useful to investors in understanding underlying business performance, while also providing additional transparency to the special items. The determination of these items may not be comparable to similarly titled measures used by other companies.

(b)     Total sales change is calculated based on reported sales results. The components of sales change include organic local-currency sales, acquisitions, divestitures, and translation. Organic local-currency sales include both organic volume impacts (which excludes acquisition and divestiture impacts) and selling price changes. Acquisition and divestiture impacts are measured separately for the first 12 months post-transaction.

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EXHIBIT 99

Adjusted free cash flow and adjusted free cash flow conversion (non-GAAP measures):

						Year ended December 31,
Major GAAP Cash Flow Categories (dollars in millions)						2022
Net cash provided by (used in) operating activities						$	5,591
Net cash provided by (used in) investing activities						(1,046)
Net cash provided by (used in) financing activities						(5,350)

Adjusted Free Cash Flow (non-GAAP measure) (dollars in millions)						Year ended December 31,
						2022
Net cash provided by (used in) operating activities						$	5,591
Adjustments for special items:
Net costs for significant litigation after-tax payment impacts						716
Divestiture costs after-tax payment impacts						8
Divestiture gains - closing cost after tax payment impacts						27
Divestiture-related restructuring after-tax payment impacts						28
Russia exit charges after-tax payment impacts						2
TCJA transition tax payment						68
Manufactured PFAS products impact						(36)
Total adjustments for special items						813
Adjusted net cash provided by (used in) operating activities (c)						6,404
Purchases of property, plant and equipment (PPE)						(1,749)
Manufactured PFAS products impact — removing related purchases of PPE						175
Adjusted free cash flow (c)						$	4,830
Adjusted net income attributable to 3M (a)						$	5,607
Adjusted free cash flow conversion (c)						86		%

(c)     Adjusted net cash provided by (used in) operating activities, adjusted free cash flow and adjusted free cash flow conversion are not defined under U.S. GAAP. Therefore, they should not be considered a substitute for income or cash flow data prepared in accordance with U.S. GAAP and may not be comparable to similarly titled measures used by other companies. The Company defines adjusted net cash provided by (used in) operating activities as net cash provided by operating activities, adjusted for special items. The Company defines adjusted free cash flow as adjusted net cash provided by (used in) operating activities less purchases of property, plant and equipment (PPE) adjusted for the estimated impact of such purchases associated with manufactured PFAS products activity. Cash payments associated with special items in the determination of adjusted net cash provided by (used in) operating activities are reflected net of applicable tax using the U.S. statutory corporate tax rate during the period of payment. It should not be inferred that the entire adjusted free cash flow amount is available for discretionary expenditures. The Company defines adjusted free cash flow conversion as adjusted free cash flow divided by net income attributable to 3M, adjusted for special items. Special items for the periods presented include the items described in the section entitled “Description of Special Items”. The Company believes adjusted net cash provided by (used in) operating activities, adjusted free cash flow and adjusted free cash flow conversion all are meaningful to investors as they are useful measures of performance and the Company uses these measures as an indication of the strength of the Company and its ability to generate cash.

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EXHIBIT 99

Adjusted EBITDA and adjusted EBITDA margin (non-GAAP measures):

						Year ended December 31,
Adjusted EBITDA (non-GAAP measure) (dollars in millions)						2022						2021
Adjusted net sales (a)						$	32,878					$	34,097
Net income attributable to 3M						5,777						5,921
Add/(subtract):
Net income/(loss) attributable to noncontrolling interest						14						8
(Income)/loss from unconsolidated subsidiaries, net of taxes						(11)						(10)
Provision for income taxes						612						1,285
Other expense/(income):
Interest (income)/expense						395						462
Pension & OPEB non-service cost (benefit)						(248)						(297)
Depreciation and amortization (DA) expense						1,831						1,915
Adjustments for special items:
Net costs for significant litigation						2,291						463
Manufactured PFAS products impact:
Remove manufactured PFAS products operating (income) loss						631						(135)
Subtract PFAS-related amount include in DA above						(68)						(56)
Gain on business divestitures						(2,724)						—
Divestiture-related restructuring actions						41						—
Divestiture costs						60						—
Russia exit charges						109						—
Total special items						340						272
Adjusted EBITDA (d)						$	8,710					$	9,556
Adjusted EBITDA margin (d)						26.5		%				28.0		%

(d)     Adjusted EBITDA and adjusted EBITDA margin are not defined under U.S. GAAP. Therefore, adjusted EBITDA and adjusted EBITDA margin should not be considered a substitute for other measures prepared in accordance with U.S. GAAP and may not be comparable to similarly titled measures used by other companies. The Company defines adjusted EBITDA as net income attributable to 3M, adjusted for net income/(loss) attributable to noncontrolling interest, (income)/loss from unconsolidated subsidiaries, provision for income taxes, other expense/(income), depreciation and amortization expense, and special items. The Company defines adjusted EBITDA margin as adjusted EBITDA divided by net sales, adjusted for special items. Special items for the periods presented include the items described in the section entitled “Description of Special Items”. The Company considers these non-GAAP measures in evaluating and managing the Company’s operations. The Company believes adjusted EBITDA and adjusted EBITDA margin are meaningful to investors as they provide useful analyses of ongoing underlying operating trends.

Description of Special Items:

In addition to reporting financial results in accordance with U.S. GAAP, the Company also provides various non-GAAP measures that incorporate adjustments for the impacts of special items. Special items incorporated in the preparation of these non-GAAP measures for the periods presented include the items described below. These items align with those included in the section “Supplemental Financial Information — Non-GAAP Measures, Description of Special Items” within the Form 8-K dated January 24, 2023 which is largely repeated below, with the exception of the expansion of the extent of adjustment relative to PFAS manufactured products to include the sales and estimates of income (including exit costs) and associated activity regarding manufactured PFAS products that 3M plans to exit by the end of 2025.

Net costs for significant litigation:

•These relate to 3M's respirator mask/asbestos, PFAS-related other environmental, and Combat Arms Earplugs matters. Net costs include the impacts of changes in accrued liabilities, external legal fees, and insurance recoveries, along with the associated tax impacts. Prior to initiating voluntary chapter 11 bankruptcy proceedings in July 2022, net costs related to Combat Arms Earplugs and Aearo-respirator mask/asbestos matters along with non-Aearo respirator mask/asbestos matters were reflected as special items in the Safety and Industrial business segment. During the bankruptcy period, net costs related to Combat Arms Earplugs and Aearo-respirator mask/asbestos matters are reflected as corporate special items in Corporate and Unallocated. In 2022, 3M made payments of approximately $907 million related to net costs for significant litigation.

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EXHIBIT 99

Divestiture costs:

•These include costs related to separating and divesting substantially an entire business segment of 3M following public announcement of its intended divestiture. In the 2022, 3M made payments of approximately $11 million associated with divestiture costs.

Gain/loss on sale of businesses divestitures:

•In 2022, 3M recorded a pre-tax gain of $2.7 billion ($2.7 billion after tax) related to the split-off and combination of its Food Safety business with Neogen Corporation. In 2022, 3M made payments of approximately $34 million related to closing costs of the transaction that were part of the determination of the gain thereon.

Divestiture-related restructuring actions:

•In the third quarter of 2022, following the split-off of the Food Safety business, management approved and committed to undertake certain restructuring actions addressing corporate functional costs across 3M in relation to the magnitude of amounts previously allocated to the divested business. In 2022, 3M made payments of approximately $34 million and associated with divestiture-related restructuring actions.

Russia exit charges:

•In 2022, 3M recorded a charge primarily related to impairment of net assets in Russia in connection with management’s committed exit and disposal plan. In 2022, 3M made payments of approximately $3 million related to Russia exit charges.

Enactment/measurement period adjustments related to the Tax Cuts and Jobs Act (TCJA)

•In 2022, 3M made payments of approximately $68 million related to the transition tax expense incurred as a result of the 2017 enactment of the TCJA.

Manufactured PFAS products:

•These amounts relate to sales and estimates of income and associated activity regarding manufactured PFAS products that 3M plans to exit by the end of 2025 included within the Transportation and Electronics business segment. Estimated income does not contemplate impacts on non-operating items such as net interest income/expense and the non-service cost components portion of defined benefit plan net periodic benefit costs. Relative to the impact of the activity of manufactured PFAS products on cash provided by (used in) operating activities, amounts are based on estimates of associated income, depreciation/amortization, and certain changes in working capital.

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