•Net sales of $961.6 million increased 11.5% YoY, 11 percentage points above the Industrial Production (IP) Index

•Operating income of $114.3 million, or $117.2 million adjusted to exclude acquisition-related costs, share reclassification proposal costs and restructuring and other costs1

•Operating margin of 11.9%, or 12.2% excluding the adjustments described above1

•Diluted EPS of $1.41 vs. $1.25 in the prior fiscal year quarter

•Adjusted diluted EPS of $1.45 vs. $1.29 in the prior fiscal year quarter1

•Repurchased over 150,000 shares during the quarter at an average purchase price per share of $81.76

MELVILLE, NY and DAVIDSON, NC, APRIL 4, 2023 - MSC INDUSTRIAL SUPPLY CO. (NYSE: MSM), "MSC," “MSC Industrial” or the "Company," a leading North American distributor of a broad range of metalworking and maintenance, repair and operations (MRO) products and services, today reported financial results for its fiscal 2023 second quarter ended March 4, 2023.

Erik Gershwind, President and Chief Executive Officer, said, “We delivered a strong second quarter as successful execution across our initiatives continues to produce results. We delivered average daily sales growth approximately 11 percentage points higher than the IP Index and double-digit average daily sales growth for the fourth consecutive quarter. Looking ahead, we expect our outperformance against the IP Index to continue as we execute across our five growth drivers and take share by leveraging technical expertise to create operational benefits across our customer base.”

Kristen Actis-Grande, Executive Vice President and Chief Financial Officer, added, "Our performance this quarter was bolstered by the changes we are making to leverage company specific growth. Productivity was strong once again, which led to operating margin expansion as benefits from our Mission Critical initiatives continue to mitigate ongoing headwinds. Looking to the future, we have reoriented our category management focus to improve product and supplier assortment and streamline our cost position. We expect to begin seeing early benefits in late fiscal 2023 with most of the benefits materializing in fiscal 2024.

Gershwind concluded, “As we move into the back half of our fiscal 2023, there is growing momentum inside MSC which has us all excited about our future. The marketplace in which we operate has attractive dynamics and a significant total addressable market to support continued expansion. Our primary growth drivers and strong balance sheet highlight our competitive advantages to remain flexible in any operating environment with a long-term focus.”

Solidify Metalworking

a.Over 150 metalworking and specialty sales experts driving customer productivity

b.Technical expertise fueled new customer wins in high growth end markets like Aerospace and Medical

Leverage Portfolio Strength

a.Class C consumable product category net sales grew low teens year over year in FY23 Q2

Expand Solutions (Vending, In-Plant and Vendor Managed Inventory)

a.Vending signings strong; vending machine net sales grew mid-teens and represent 15% of total Company net sales

b.In-Plant signings strong; In-Plant net sales grew nearly 20% and represent over 12% of total Company net sales

c.Total Solutions net sales represent over 56% of total Company net sales

Grow E-Commerce

a.E-Commerce net sales grew low teens year over year in FY23 Q2 and reached 62% of total Company net sales

Diversify Customers and End Markets

a.Public Sector, driven by both federal and state government contract wins, grew 20% year over year in FY23 Q2

a.Floating/fixed rate debt ratio now at 45/55

b.Top two priorities remain investing in the business and returning cash to shareholders through ordinary dividends

c.Next two priorities are tuck-in acquisitions and share buybacks

d.Share buybacks on hold pending share reclassification proposal

•Current net sales growth tracking to middle to high end of range

•Recently acquired companies expected to dilute gross margins by 40 to 50 bps and operating margins by ~30 bps

•Overall, gross margins expected to be higher in back half of fiscal year

•Adjusted operating expense as a percentage of net sales expected to improve in the back half of the year

•Adjusted operating margin tracking to middle of range

(1) Guidance provided is a non-GAAP figure presented on an adjusted basis. For further details see the Non-GAAP financial measures information presented in the schedules of this release.

(2) The Company defines Operating Cash Flow Conversion as Net cash provided by operating activities as a percentage of Net income. The Company’s management uses Operating Cash Flow Conversion to evaluate the Company’s operating performance, in particular how efficiently the Company turns its sales and profits into cash, and to assess the efficiency of the Company’s use of working capital. The Company believes Operating Cash Flow Conversion is useful to investors for the foregoing reasons and as a measure of the rate at which the Company converts its net income reported in accordance with GAAP to cash inflows, which helps investors assess whether the Company is generating sufficient cash flow to provide an adequate return.

MSC will host a conference call today at 8:30 a.m. EDT to review the Company’s fiscal 2023 second quarter results. The call, accompanying slides, and other operational statistics may be accessed at: https://investor.mscdirect.com. The conference call may also be accessed at 1-877-443-5575 (U.S.), 1-855-669-9657 (Canada) or 1-412-902-6618 (international).

An online archive of the broadcast will be available until May 4, 2023. The Company’s reporting date for fiscal 2023 third quarter results is scheduled for June 29, 2023.

MSC Industrial Supply Co. (NYSE:MSM) is a leading North American distributor of a broad range of metalworking and maintenance, repair and operations (MRO) products and services. We help our customers drive greater productivity, profitability and growth with approximately 2.2 million products, inventory management and other supply chain solutions, and deep expertise from more than 80 years of working with customers across industries. Our experienced team of approximately 7,000 associates works with our customers to help drive results for their businesses - from keeping operations running efficiently today to continuously rethinking, retooling and optimizing for a more productive tomorrow. For more information on MSC Industrial, please visit mscdirect.com.

Statements in this press release may constitute "forward-looking statements" under the Private Securities Litigation Reform Act of 1995. All statements, other than statements of present or historical fact, that address activities, events or developments that we expect, believe or anticipate will or may occur in the future, including statements about the future impact of COVID-19 on our business operations, results of operations and financial condition, expected future results, expected benefits from our investment and strategic plans and other initiatives, and expected future growth, profitability and return on invested capital, are forward-looking statements. The words “will,” “may,” “believes,” “anticipates,” “thinks,” “expects,” “estimates,” “plans,” “intends,” and similar expressions are intended to identify forward-looking statements. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those anticipated by these forward-looking statements. In addition, any statements which refer to expectations, projections or other characterizations of future events or circumstances, statements involving a discussion of strategy, plans or intentions, statements about management’s assumptions, projections or predictions of future events or market outlook and any other statement other than a statement of present or historical fact are forward-looking statements. The inclusion of any statement in this press release does not constitute an admission by MSC or any other person that the events or circumstances described in such statement are material. In addition, new risks may emerge from time to time and it is not possible for management to predict such risks or to assess the impact of such risks on our business or financial results. Accordingly, future results may differ materially from historical results or from those discussed or implied by these forward-looking statements. Given these risks and uncertainties, the reader should not place undue reliance on these forward-looking statements. These risks and uncertainties include, but are not limited to, the following: general economic conditions in the markets in which we operate; changing customer and product mixes; volatility in commodity and energy prices, the impact of prolonged periods of low, high and rapid inflation, and fluctuations in interest rates; competition, including the adoption by competitors of aggressive pricing strategies and sales methods; industry consolidation and other changes in the industrial distribution sector; our ability to realize the expected benefits from our investment and strategic plans, including our transition from being a spot-buy supplier to a mission-critical partner to our customers; our ability to realize the expected cost savings and benefits from our restructuring activities and structural cost reductions; the potential impact of the COVID-19 pandemic on our sales, operations and supply chain; the retention of key personnel; the credit risk of our customers, higher inflation and fluctuations in interest rates; the risk of customer cancellation or rescheduling of orders; difficulties in calibrating customer demand for our products, which could cause an inability to sell excess products ordered from manufacturers resulting in inventory write-downs or could conversely cause inventory shortages of such products; work stoppages, labor shortages or other business interruptions (including those due to extreme weather conditions) at transportation centers, shipping ports, our headquarters or our customer fulfillment centers; disruptions or breaches of our information technology systems, or violations of data privacy laws; the retention of qualified sales and customer service personnel and metalworking specialists; the risk of loss of key suppliers or contractors or key brands or supply chain disruptions, including due to import restrictions or global geopolitical conditions; changes to governmental trade or sanctions policies, including the impact from significant import restrictions or tariffs or moratoriums on economic activity with certain countries or regions; risks related to opening or expanding our customer fulfillment centers; our ability to estimate the cost of healthcare claims incurred under our self-insurance plan; litigation risk due to the nature of our business; risks associated with the integration of acquired businesses or other strategic transactions; financial restrictions on outstanding borrowings; our ability to maintain our credit facilities or incur additional borrowings on terms we deem attractive; the interest rate uncertainty due to the London InterBank Offered Rate (LIBOR) reform; the failure to comply with applicable environmental, health and safety laws and regulations, and other laws applicable to our business; the outcome of government or regulatory proceedings or future litigation; goodwill and intangible assets recorded resulting from our acquisitions could be impaired; our common stock price may be volatile due to factors outside of our control; and the significant control that our principal shareholders exercise over us, which may result in our taking actions or failing to take actions which our other shareholders do not prefer. Additional information concerning these and other risks is described under "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual and Quarterly Reports on Forms 10-K and 10-Q, respectively, and in the other reports and documents that we file with the United States Securities and Exchange Commission. We expressly disclaim any obligation to update any of these forward-looking statements, except to the extent required by applicable law.

To supplement MSC’s unaudited selected financial data presented consistent with accounting principles generally accepted in the United States (“GAAP”), the Company discloses certain non-GAAP financial measures, including non-GAAP gross profit, non-GAAP operating expenses, non-GAAP income from operations, non-GAAP operating margin, non-GAAP incremental margin, non-GAAP provision for income taxes, non-GAAP net income and non-GAAP diluted earnings per share, that exclude acquisition-related costs, share reclassification proposal costs, restructuring and other costs and tax effects.

These non-GAAP financial measures are not presented in accordance with GAAP or an alternative for GAAP financial measures and may be different from similar non-GAAP financial measures used by other companies. The presentation of this additional information is not meant to be considered in isolation or as a substitute for the most directly comparable GAAP financial measures and should only be used to evaluate MSC’s results of operations in conjunction with the corresponding GAAP financial measures.

This press release also includes certain forward-looking information that is not presented in accordance with GAAP. The Company believes that a quantitative reconciliation of such forward-looking information to the most directly comparable financial measure calculated and presented in accordance with GAAP cannot be made available without unreasonable efforts because a reconciliation of these non-GAAP financial measures would require the Company to predict the timing and likelihood of potential future events such as restructurings, M&A activity and other infrequent or unusual gains and losses. Neither the timing or likelihood of these events, nor their probable significance, can be quantified with a reasonable degree of accuracy. Accordingly, a reconciliation of such forward-looking information to the most directly comparable GAAP financial measure is not provided.

•Results Excluding Acquisition-Related Costs, Share Reclassification Proposal Costs and Restructuring and Other Costs

In calculating non-GAAP financial measures, we exclude acquisition-related costs, share reclassification proposal costs, restructuring and other costs, and tax effects. Management makes these adjustments to facilitate a review of the Company’s operating performance on a comparable basis between periods, for comparison with forecasts and strategic plans, for identifying and analyzing trends in the Company’s underlying business and for benchmarking performance externally against competitors. We believe that investors benefit from seeing results from the perspective of management in addition to seeing results presented in accordance with GAAP for the same reasons and purposes for which management uses such non-GAAP financial measures.

•Incremental Operating Margin

The Company defines Incremental Operating Margin as the change in year-over-year Income from Operations as a percentage of the change in year-over-year Net Sales and Adjusted Incremental Operating Margin as Incremental Operating Margin adjusted to exclude acquisition-related costs, share reclassification proposal costs and restructuring and other costs by excluding such items from Income from Operations. The Company’s management believes that Incremental Operating Margin is useful because it shows the direction that operating profit margins are moving as a result of changes in net sales between periods, and that, by excluding the aforementioned items, Adjusted Incremental Operating Margin helps to more clearly show, on a comparable basis between periods, trends in the Company’s underlying business and results of operations. The Company believes that investors benefit from seeing results from the perspective of management in addition to seeing results presented in accordance with GAAP for the same reasons and purposes for which management uses such non-GAAP financial measures