Exhibit 99.1

P.A.M. TRANSPORTATION SERVICES, INC.

ANNOUNCES RESULTS FOR THE FIRST QUARTER

ENDED MARCH 31, 2024

First Quarter 2024 Summary Results

Tontitown, Arkansas, April 18, 2024...... P.A.M. Transportation Services, Inc. (NASDAQ: PTSI) (“the Company”) today reported net income of $0.3 million, or diluted and basic earnings per share of $0.01, for the quarter ended March 31, 2024. These results compare to net income of $5.2 million, or diluted earnings per share of $0.23 ($0.24 basic), for the quarter ended March 31, 2023.

Operating revenues decreased 17.6% to $182.6 million for the first quarter of 2024 compared to $221.7 million for the first quarter of 2023.

Joe Vitiritto, President of the Company, commented, “The truckload market continued to be extremely challenging during the first quarter of 2024, characterized by shippers continued success in leveraging an overcapacity market to their advantage to attain rates at or below cost. This market backdrop coupled with weather disruptions early in the quarter which drove cost increases and reductions in equipment utilization created a tough environment to get traction in efforts to improve earnings.

We continue to intensely focus on cost reduction, opportunities to gain efficiency and market positioning to maximize the benefit of an improving freight environment when that occurs. We appreciate the hard work and dedication of our employees as we work through this tough economic cycle.”

Liquidity, Capitalization, and Cash Flow

As of March 31, 2024, we had an aggregate of $185.7 million of cash, marketable equity securities, and available liquidity under our line of credit and $314.6 million of stockholders’ equity. Outstanding debt was $271.6 million as of March 31, 2024, which represents a $9.9 million increase from December 31, 2023.

During the first quarter of 2024, we generated $9.6 million in operating cash flow.

About P.A.M. Transportation Services, Inc.

P.A.M. Transportation Services, Inc. is a holding company that owns subsidiaries engaged in providing truckload dry van carrier services transporting general commodities throughout the continental United States, as well as in the Canadian provinces of Ontario and Quebec. The Company’s consolidated operating subsidiaries also provide transportation services in Mexico through its gateways in Laredo and El Paso, Texas, under agreements with Mexican carriers.

Forward-Looking Statements

Certain information included in this document contains or may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements may relate to expected future financial and operating results, prospects, plans or events, and are thus prospective. Such forward-looking statements are subject to risks, uncertainties and other factors which could cause actual results to differ materially from future results expressed or implied by such forward-looking statements. Potential risks and uncertainties include, but are not limited to, excess capacity in the trucking industry; surplus inventories; general inflation, recessionary economic cycles and downturns in customers' business cycles; a significant reduction in or termination of the Company's trucking service by a key customer, including as a result of future labor disruptions; increases or rapid fluctuations in fuel prices, interest rates, fuel taxes, tolls, and license and registration fees; potential economic, business or operational disruptions or uncertainties that may result from any future public health crises; the resale value of the Company's used equipment; the price and availability of new equipment consistent with anticipated acquisitions and replacement plans; increases in compensation for and difficulty in attracting and retaining qualified drivers and owner-operators; increases in insurance premiums and deductible amounts relating to accident, cargo, workers' compensation, health, and other claims; increases in the number or amount of claims for which the Company is self-insured; inability of the Company to continue to secure acceptable financing arrangements; seasonal factors such as harsh weather conditions that increase operating costs; competition from trucking, rail, and intermodal competitors including reductions in rates resulting from competitive bidding; the ability to identify acceptable acquisition candidates, consummate acquisitions, and integrate acquired operations; our ability to develop and implement suitable information technology systems and prevent failures in or breaches of such systems; the impact of pending or future litigation; general risks associated with doing business in Mexico, including, without

limitation, exchange rate fluctuations, inflation, import duties, tariffs, quotas, political and economic instability and terrorism; the potential impact of new laws, regulations or policy, including, without limitation, rules regarding the classification of independent contractors as employees, tariffs, import/export, trade and immigration regulations or policies; and other factors, including risk factors, included from time to time in filings made by the Company with the Securities and Exchange Commission. The Company undertakes no obligation to publicly update or revise forward-looking statements, whether due to new information, future events or otherwise. Considering these risks and uncertainties, the forward-looking events and circumstances discussed above and in company filings might not transpire.

FROM: P.A.M. TRANSPORTATION SERVICES, INC.

P.O. BOX 188

Tontitown, AR 72770

Lance K. Stewart

(479) 361-9111