WNC

EX-99.1

2 wnc-20260630xex991.htm

EX-99.1

Document

Media Contact:

Heidi Murphy

Heidi.murphy@padillaco.com

Investor Relations:

John Cummings

Sr. Director, FP&A & IR

(765) 262-2898

john.cummings@onewabash.com

Wabash Announces Second Quarter 2026 Results

▪Quarterly revenue of $417 million - Reflects strong shipments in core Dry Van market. Parts & Services generated positive revenue growth year-over-year.

▪GAAP operating loss of $25 million or Non-GAAP adjusted operating loss of $24 million; Excludes impact of $1.8 million of facility idling costs.

▪Quarterly GAAP EPS of $(0.56) or Non-GAAP adjusted EPS of $(0.53). Within the guidance range communicated for Q2-26.

▪Total backlog of $956 million ending Q2. An increase of 14% versus Q1-26 and outperforming traditional seasonal trends.

▪Q3-2026 revenue outlook midpoint of $450 million, EPS outlook $(0.45). Market conditions and financials expected to improve sequentially.

LAFAYETTE, Ind. – July 29, 2026 – Wabash (NYSE: WNC), a leader in end-to-end supply chain solutions for the transportation, logistics and infrastructure markets, today reported results for the quarter ended June 30, 2026.

The Company's net sales for the second quarter of 2026 were $417.2 million, reflecting a 9.1% decrease compared to the same quarter of the previous year. The Company generated consolidated gross margin of $15 million, equivalent to 3.7% of sales. GAAP operating loss amounted to $25 million as the company recognized $1.8 million of facility idling costs. Non-GAAP adjusted operating loss was $23.5 million for the quarter. Second quarter GAAP diluted earnings per share was $(0.56) or $(0.53) on a Non-GAAP adjusted basis.

As of June 30, 2026, total Company backlog stood at approximately $956 million, an increase of $119 million over the prior quarter.

For the third quarter of 2026, the Company guides its revenue to be in the range of $440 million to $460 million and Non-GAAP adjusted EPS to a range of $(0.50) to $(0.40).

"The second quarter continued to strengthen our conviction that the freight market recovery is taking shape. We are seeing a healthier combination of supply-side forces, safety-focused federal led enforcement and improving carrier economics. Those factors are beginning to translate into better market fundamentals" explained Brent Yeagy, President and Chief Executive Officer. "This matters because carrier profitability is what ultimately frees up capital to support increased replacement demand expenditure."

Business Segment Highlights

The table below is a summary of select segment operating and financial results prior to the elimination of intersegment sales for the second quarter of 2026 and 2025. A complete disclosure of the results by individual segment is included in the tables following this release.

Wabash National Corporation

Three Months Ended June 30,20262025

New Units Shipped

Trailers(1) 8,2928,043

Truck bodies1,3803,188

(1) Trailer shipments do not include converter dollies for any period presented.

Transportation SolutionsParts & Services

Three Months Ended June 30,2026202520262025

(Unaudited, dollars in thousands)

Net sales$354,654$400,214$63,387$59,744

Gross profit$5,986$28,600$9,343$12,800

Gross profit margin1.7%7.1%14.7%21.4%

(Loss) income from operations$(13,901)$12,518$5,965$9,060

(Loss) income from operations margin(3.9)%3.1%9.4%15.2%

During the second quarter, Transportation Solutions generated net sales of $354.7 million, a decrease of 11.4% compared to the same quarter of the previous year. Operating loss for the quarter amounted to $13.9 million, representing 3.9% of sales.

Parts & Services' net sales for the second quarter were $63.4 million, an increase of 6.1% compared to the prior year quarter. Operating income for the quarter amounted to $6.0 million, or 9.4% of sales.

Non-GAAP Measures

In addition to disclosing financial results calculated in accordance with United States generally accepted accounting principles (GAAP), the financial information included in this release contains non-GAAP financial measures including adjusted operating loss, adjusted EBITDA, adjusted net loss attributable to common stockholders, adjusted diluted loss per share, free cash flow, adjusted segment EBITDA, and adjusted segment EBITDA margin. These non-GAAP measures should not be considered a substitute for, or superior to, financial measures and results calculated in accordance with GAAP, including net (loss) income, and reconciliations to GAAP financial statements should be carefully evaluated.

Adjusted operating loss, a non-GAAP financial measure, excludes certain costs, expenses, other charges, gains or income that are included in the determination of operating income under U.S. GAAP, but that management would not consider important in evaluating the quality of the Company’s operating results as they are not indicative of the Company’s core operating results or may obscure trends useful in evaluating the Company’s

EX-99.1

3 d32775dex991.htm

EX-99.1

EX-99.1

Exhibit 99.1

Recent Developments

Preliminary Unaudited Estimated Financial Results for the Three Months Ended June 30, 2026

We are in the process of finalizing our results for the three months ended June 30, 2026. We have presented below ranges of certain unaudited preliminary results and estimates of selected key business metrics for the three months ended June 30, 2026, as well as the comparative period for the three months ended June 30, 2025. The following information reflects our preliminary estimates with respect to such data based on currently available information and does not present all necessary information for an understanding of our financial condition for the three months ended June 30, 2026. These estimated metrics should not be viewed as a substitute for our financial statements prepared in accordance with GAAP incorporated herein by reference.

We have prepared and provided ranges, rather than specific amounts, for the information below, primarily because our financial closing and analysis procedures are not yet completed. This financial information has been prepared by, and is the responsibility of, our management and is subject to revisions based on our procedures and controls associated with our financial reporting process. Our independent registered public accounting firm, Ernst & Young LLP, has not audited, reviewed, or performed any procedures with respect to our preliminary results or the accounting treatment thereof and does not express an opinion or any other form of assurance with respect thereto. Our financial closing procedures for the three months ended June 30, 2026, are not yet complete and, as a result, our actual results will not be finalized until after the completion of this offering.

Accordingly, you should not place undue reliance upon these preliminary results and estimates of selected key business metrics. While we believe that such information and estimates are based on reasonable assumptions and management’s reasonable judgment, our actual results may vary. For example, during the course of the preparation of the respective financial statements and related notes, additional items may be identified that would require material adjustments to be made to the preliminary estimated results presented. Further, our preliminary estimated results are not necessarily indicative of the results to be expected for any future period as a result of various factors, including, but not limited to, those discussed in the sections titled “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements”. This information should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for prior periods included in our Annual Report on Form 10-K and Quarterly Report on Form 10-Q and incorporated by reference into this offering memorandum.

Three Months Ended June 30,

2026 (Estimated)

2025 (Actual)

High

Low

(unaudited) (in thousands, except per share amounts)

GAAP Financial Measures:

Net Sales

$ 421,000

$ 413,000

$ 458,816

Net loss

$ (23,287 )

$ (26,237 )

$ (9,603 )

Net loss attributable to common stockholders

$ (23,530 )

$ (26,480 )

$ (9,589 )

Diluted loss per share

$ (0.57 )

$ (0.63 )

$ (0.23 )

Non-GAAP Financial Measures:

Adjusted EBITDA(1)

$ (9,653 )

$ (12,603 )

$ 16,320

Adjusted net loss attributable to common stockholders(2)

$ (22,207 )

$ (25,157 )

$ (6,139 )

Adjusted diluted loss per share(2)

$ (0.54 )

$ (0.60 )

$ (0.15 )

(1)

Adjusted EBITDA includes noncontrolling interest and excludes loss from unconsolidated entity and is defined as earnings before interest, taxes, depreciation, amortization, stock-based compensation, impairment and other, net, facility idling costs, the Missouri legal matter, and other non-operating income and expense. Management believes providing adjusted EBITDA is useful for investors to understand the Company’s performance and results of operations period to period with the exclusion of the items identified above. Management believes the presentation of adjusted EBITDA, when combined with the GAAP presentation of net loss, is beneficial to an investor’s understanding of the Company’s operating performance.

(2)

Adjusted net loss attributable to common stockholders and adjusted diluted loss per share reflect adjustments for facility idling costs, the Missouri legal matter and the related tax effect of those adjustments. Management believes providing adjusted measures and excluding certain items facilitates comparisons to the Company’s prior year periods and, when combined with the GAAP presentation of net loss attributable to common stockholders and diluted loss per share, is beneficial to an investor’s understanding of the Company’s performance.

The Company’s estimates of net sales for the second quarter of 2026 were between $421 million and $413 million, reflecting an 8% to 10% decrease compared to the sa

EX-99.1

2 wnc-20260331xex991.htm

EX-99.1

Document

Media Contact:

Heidi Murphy

Heidi.murphy@padillaco.com

Investor Relations:

John Cummings

Sr. Director, FP&A & IR

(765) 262-2898

john.cummings@onewabash.com

Wabash Announces First Quarter 2026 Results

▪Quarterly revenue of $303 million - Softer than expected demand, particularly in our Truck Body business, led to revenue coming in below our guidance range. Parts & Services generated positive revenue growth year-over-year.

▪GAAP operating loss of $52 million or Non-GAAP adjusted operating loss of $56 million; Excludes impact of $6 million gain related to purchase accounting and $2.8 million of facility idling costs.

▪Quarterly GAAP EPS of $(1.11) or Non-GAAP adjusted EPS of $(1.17). Missing Expectations due to revenue miss and operational inefficiencies associated with lower than expected volumes.

▪Total backlog of $837 million ending Q1. Near-term market environment continues to be challenging as the industry remains cautious, though underlying indicators point to pending recovery.

▪Q2-2026 revenue outlook midpoint of $390 million, EPS outlook $(0.50). Market conditions and financials expected to improve throughout 2026.

LAFAYETTE, Ind. – May 1, 2026 – Wabash (NYSE: WNC), a leader in end-to-end supply chain solutions for the transportation, logistics and infrastructure markets, today reported results for the quarter ended March 31, 2026.

The Company's net sales for the first quarter of 2026 were $303.2 million, reflecting a 20.4% decrease compared to the same quarter of the previous year. The Company generated consolidated gross margin loss of $11 million, equivalent to negative 3.5% of sales. GAAP operating loss amounted to $52 million as the company recognized a $6 million gain related to purchase accounting and $2.8 million of facility idling costs. Non-GAAP adjusted operating loss was $55.5 million for the quarter. First quarter GAAP diluted earnings per share was $(1.11) or $(1.17) on a Non-GAAP adjusted basis.

As of March 31, 2026, total Company backlog stood at approximately $837 million, an increase of $132 million over the prior quarter.

For the second quarter of 2026, the Company guides its revenue to be in the range of $380 million to $400 million and Non-GAAP adjusted EPS to a range of $(0.40) to $(0.60).

"As we entered the first quarter, we did so with a clear-eyed view of the environment in front of us. Freight markets were uncertain, and customers continued to act cautiously. Order patterns were uneven, asset utilization inconsistent, and capital decisions across the industry were being evaluated carefully" explained Brent Yeagy, President and Chief Executive Officer. "At the same time, we were encouraged by early signs of stabilization and improving fundamentals that typically precede a broader recovery. Now, as we move into the second quarter of 2026, both our customers and our visibility continues to improve, and it shows an environment that is building to set up a constructive 2027 as spot rates, contract rates, capacity and demand are all coming together to drive back to replacement demand for equipment and possibly beyond, and fleets begin to to plan more confidentially."

Business Segment Highlights

The table below is a summary of select segment operating and financial results prior to the elimination of intersegment sales for the first quarter of 2026 and 2025. A complete disclosure of the results by individual segment is included in the tables following this release.

Wabash National Corporation

Three Months Ended March 31,20262025

New Units Shipped

Trailers5,3786,290

Truck bodies1,5273,000

Transportation SolutionsParts & Services

Three Months Ended March 31,2026202520262025

(Unaudited, dollars in thousands)

Net sales$250,176$346,803$54,069$51,955

Gross (loss) profit$(15,516)$8,414$4,941$10,589

Gross (loss) profit margin(6.2)%2.4%9.1%20.4%

(Loss) income from operations$(37,349)$(9,798)$3,803$6,910

(Loss) income from operations margin(14.9)%(2.8)%7.0%13.3%

During the first quarter, Transportation Solutions generated net sales of $250.2 million, a decrease of 27.9% compared to the same quarter of the previous year. Operating loss for the quarter amounted to $37.3 million, representing 14.9% of sales.

Parts & Services' net sales for the first quarter were $54.1 million, an increase of 4.1% compared to the prior year quarter. Operating income for the quarter amounted to $3.8 million, or 7.0% of sales.

Non-GAAP Measures

In addition to disclosing financial results calculated in accordance with United States generally accepted accounting principles (GAAP), the financial information included in this release contains non-GAAP financial measures including adjusted operating loss, adjusted EBITDA, adjusted net loss attributable to common stockholders, adjusted diluted loss per share, free cash flow, adjusted segment EBITDA, and adjusted segment EBITDA margin. These non-GAAP measures should not be considere

wnc-20260204false000087952600008795262026-02-042026-02-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) February 4, 2026

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition. On February 4, 2026, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the year and quarter ended December 31, 2025. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company’s Investor Relations website at ir.onewabash.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated February 4, 2026

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: February 4, 2026By:/s/ Patrick Keslin Patrick Keslin Senior Vice President and Chief Financial Officer

wnc-20251030false000087952600008795262025-10-302025-10-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) October 30, 2025

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 30, 2025, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2025. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.onewabash.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated October 30, 2025

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: October 30, 2025By:/s/ Patrick Keslin Patrick Keslin Senior Vice President and Chief Financial Officer

wnc-20251009false000087952600008795262025-10-102025-10-10

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) October 9, 2025

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 10, 2025, Wabash National Corporation (the "Company") announced certain preliminary results for the quarter ended September 30, 2025. The preliminary results are subject to adjustment and finalization by the Company. There can be no assurance that our final results will not differ from these preliminary estimates. Net sales for the third quarter of 2025 are expected to be $382 million compared to $464 million for the prior year quarter. The Company expects earnings for the third quarter of 2025 to be $0.97 per diluted share, compared to the third quarter of 2024 loss of $7.53 per diluted share. Third quarter of 2025 non-GAAP adjusted loss per diluted share is expected to be $0.51, compared to the third quarter of 2024 non-GAAP adjusted earnings per diluted share of $0.19. Non-GAAP adjusted earnings per diluted share for the third quarter of 2024 and 2025 exclude non-cash expense adjustments for a lawsuit, the Product Liability Matter, described below. Challenging market conditions persisted through the quarter, driving softer demand and expected revenue below the low end of our guidance range. Despite these headwinds, disciplined execution and prudent working capital management resulted in expected positive free cash flow year-to-date.1 We will discuss further at our Earnings Call on October 30, 2025. 1 Free cash flow is defined as net cash (used in) provided by operating activities minus cash payments for capital expenditures minus expenditures for revenue generating assets. Non-GAAP Measures In addition to disclosing financial results calculated in accordance with United States generally accepted accounting principles (“GAAP”), the financial information included in this Form 8-K contains non-GAAP financial measures. These non-GAAP measures should not be considered a substitute for, or superior to, financial measures and results calculated in accordance with GAAP, including net (loss) income, and reconciliations to GAAP financial statements should be carefully evaluated. Adjusted diluted (loss) earnings per share reflect an adjustment for the Product Liability Matter and the related tax effect of that adjustment. Management believes providing adjusted measures and excluding certain items facilitates comparisons to the Company’s prior year periods and, when combined with the GAAP presentation of diluted net (loss) income per share, is beneficial to an investor’s understanding of the Company’s performance. A reconciliation of adjusted diluted (loss) earnings per share to diluted earnings (loss) per share, the most comparable GAAP financial measures, are included in the tables below. Free cash flow is defined as net cash from operating activities minus cash payments for capital expenditures minus expenditures for revenue generating assets. Management believes providing free cash flow is useful for investors to understand the Company’s

wnc-20250725false000087952600008795262025-07-252025-07-25

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) July 25, 2025

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 25, 2025, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2025. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.onewabash.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated July 25, 2025

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: July 25, 2025By:/s/ Patrick Keslin Patrick Keslin Senior Vice President and Chief Financial Officer

wnc-20250430false000087952600008795262025-04-302025-04-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) April 30, 2025

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 30, 2025, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2025. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.onewabash.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated April 30, 2025

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: April 30, 2025By:/s/ Patrick Keslin Patrick Keslin Senior Vice President and Chief Financial Officer

wnc-20250129false000087952600008795262025-01-292025-01-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) January 29, 2025

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition. On January 29, 2025, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the year and quarter ended December 31, 2024. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company’s Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated January 29, 2025

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: January 29, 2025By:/s/ Patrick Keslin Patrick Keslin Senior Vice President and Chief Financial Officer

wnc-20241024false000087952600008795262024-10-242024-10-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) October 24, 2024

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 24, 2024, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2024. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated October 24, 2024

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: October 24, 2024By:/s/ Patrick Keslin Patrick Keslin Senior Vice President and Chief Financial Officer

wnc-20240724false000087952600008795262024-07-242024-07-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) July 24, 2024

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 24, 2024, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2024. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated July 24, 2024

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: July 24, 2024By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20240424false000087952600008795262024-04-242024-04-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) April 24, 2024

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 24, 2024, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2024. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated April 24, 2024

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: April 24, 2024By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20240201false000087952600008795262024-02-012024-02-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) February 1, 2024

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition. On February 1, 2024, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the year and quarter ended December 31, 2023. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company’s Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated February 1, 2024

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: February 1, 2024By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20231025false000087952600008795262023-10-252023-10-25

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) October 25, 2023

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 25, 2023, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2023. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated October 25, 2023

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: October 25, 2023By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20230726false000087952600008795262023-07-262023-07-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) July 26, 2023

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 26, 2023, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2023. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated July 26, 2023

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: July 26, 2023By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20230426false000087952600008795262023-04-262023-04-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) April 26, 2023

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 26, 2023, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2023. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated April 26, 2023

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: April 26, 2023By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20230202false000087952600008795262023-02-022023-02-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) February 2, 2023

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition. On February 2, 2023, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the year and quarter ended December 31, 2022. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company’s Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated February 2, 2023

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: February 2, 2023By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20221026false000087952600008795262022-10-262022-10-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) October 26, 2022

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 26, 2022, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2022. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated October 26, 2022

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: October 26, 2022By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20220727false000087952600008795262022-07-272022-07-27

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) July 27, 2022

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 27, 2022, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2022. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated July 27, 2022

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: July 27, 2022By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer

wnc-20220427false000087952600008795262022-04-272022-04-27

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) April 27, 2022

WABASH NATIONAL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware001-1088352-1375208 (State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

3900 McCarty Lane LafayetteIndiana47905 (Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: (765) 771-5310 Not applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.01 par value WNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 27, 2022, Wabash National Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2022. A copy of the Company’s press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The press release and a teleconference visual presentation are also available on the Company's Investor Relations website at ir.wabashnational.com. Item 9.01 Financial Statements and Exhibits. (d)Exhibits.

EXHIBIT INDEX

Exhibit No.Description

99.1 Wabash National Corporation Press Release dated April 27, 2022

104Cover Page Interactive Data File (the Cover Page Interactive Data File is embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WABASH NATIONAL CORPORATION

Date: April 27, 2022By:/s/ Michael N. Pettit Michael N. Pettit Senior Vice President and Chief Financial Officer