Exhibit 99.1

MARTEN TRANSPORT ANNOUNCES FIRST QUARTER RESULTS

Reports highest operating revenue and operating income for any quarter in Marten’s history – and the best operating ratio, net of fuel surcharges, for any quarter since Marten became a public company in 1986

MONDOVI, Wis., April 19, 2022 (GLOBE NEWSWIRE) -- Marten Transport, Ltd. (Nasdaq/GS:MRTN) today reported a 52.9% improvement in net income to $27.5 million, or 33 cents per diluted share, for the first quarter ended March 31, 2022, from $18.0 million, or 22 cents per diluted share, for the first quarter of 2021. The 2022 first-quarter earnings also improved 11.3% sequentially from 2021 fourth-quarter net income of $24.7 million, or 30 cents per diluted share.

Operating Results Comparison
	Percentage			Percentage			Percentage			Percentage
	Increase			Increase			Increase			Increase
	Three Months			Year			Year			Year
	Ended			Ended			Ended			Ended
	March 31,			December 31,			December 31,			December 31,
	2022 vs. 2021			2021 vs. 2020			2020 vs. 2019			2019 vs. 2018
Operating revenue		28.8	%		11.4	%		3.7	%		7.1	%
Operating revenue, net of fuel surcharges		23.8	%		8.3	%		6.8	%		8.6	%
Operating income		49.4	%		19.8	%		21.9	%		8.7	%
Net income		52.9	%		22.9	%		13.8	%		11.0	%

Operating revenue for the first quarter of 2022 was the highest amount for any quarter in Marten’s 77-year history. Operating revenue improved 28.8% to $287.3 million for the first quarter of 2022 from $223.0 million for the first quarter of 2021 - and improved 7.6% from Marten’s previous best of $266.9 million for the 2021 fourth quarter. Excluding fuel surcharges, operating revenue improved 23.8% to $245.3 million for the 2022 quarter from $198.2 million for the 2021 quarter - and improved 5.3% from $232.9 million for the 2021 fourth quarter. Fuel surcharge revenue increased to $42.0 million for the 2022 quarter from $24.9 million for the 2021 quarter due to significantly higher fuel prices.

Operating income for the first quarter of 2022 was also the highest amount for any quarter in Marten’s history. Operating income improved 49.4% to $35.9 million for the first quarter of 2022 from $24.0 million for the first quarter of 2021 - and improved 16.9% from Marten’s previous best of $30.7 million for the 2021 fourth quarter.

Operating expenses as a percentage of operating revenue improved to 87.5% for the first quarter of 2022 from 89.2% for the first quarter of 2021. Operating expenses as a percentage of operating revenue, with both amounts net of fuel surcharges, improved to 85.4% for the 2022 quarter, the best ratio for any quarter since Marten became a public company in 1986, from 87.9% for the 2021 quarter.

Executive Chairman Randolph L. Marten stated, “Our talented and determined people capitalized on the continuing tight freight market to hit the trifecta this quarter, producing our highest operating revenue and operating income for any quarter in our history, along with our best operating ratio, net of fuel surcharges, for any quarter since we became a public company in 1986.”

“We also provided momentum to the rest of this year to continue our consistent, strong profitable growth. We began this year’s second quarter with 128 more of the industry’s top drivers than we employed at the beginning of the year, despite the unrelenting national shortage of qualified drivers. We also added 95 refrigerated containers during the first quarter, increasing our fleet to 729 containers as of March 31^st.”

“Additionally, reflecting our confidence in Marten’s financial strength and commitment to enhancing stockholder value, we repurchased and retired 1.3 million shares of our common stock for $25 million and increased our regular quarterly cash dividend by 50% during the first quarter of 2022.”

Operating Results throughout the Pandemic – Percentage Increase Over Same Quarter of Prior Year
	Q1 2022	Q4 2021	Q3 2021	Q2 2021	Q1 2021	Q4 2020	Q3 2020	Q2 2020
Operating revenue	28.8%	17.4%	16.3%	9.4%	2.0%	4.7%	0.5%	0.1%
Operating revenue, net of fuel surcharges	23.8%	12.5%	12.8%	5.0%	2.5%	8.8%	3.8%	4.7%
Operating income	49.4%	20.0%	16.8%	12.9%	33.1%	36.0%	21.8%	26.6%
Net income	52.9%	26.1%	17.9%	18.1%	31.3%	24.5%	8.8%	19.4%

Current Investor Presentation

Marten Transport, with headquarters in Mondovi, Wis., is a multifaceted business offering a network of refrigerated and dry truck-based transportation capabilities across the Company’s five distinct business platforms - Truckload, Dedicated, Intermodal, Brokerage and MRTN de Mexico. Marten is one of the leading temperature-sensitive truckload carriers in the United States, specializing in transporting and distributing food, beverages and other consumer packaged goods that require a temperature-controlled or insulated environment. The Company offers service in the United States, Mexico and Canada, concentrating on expedited movements for high-volume customers. Marten’s common stock is traded on the Nasdaq Global Select Market under the symbol MRTN.

This press release contains certain statements that may be considered forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These statements include a discussion of Marten’s prospects for future growth and by their nature involve substantial risks and uncertainties, and actual results may differ materially from those expressed in such forward-looking statements. Important factors known to the Company that could cause actual results to differ materially from those discussed in the forward-looking statements are discussed in Part I, Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. The Company undertakes no obligation to correct or update any forward-looking statements, whether as a result of new information, future events or otherwise.

CONTACTS: Tim Kohl, Chief Executive Officer, and Jim Hinnendael, Executive Vice President and Chief Financial Officer, of Marten Transport, Ltd., 715-926-4216.

MARTEN TRANSPORT, LTD.

CONSOLIDATED CONDENSED BALANCE SHEETS

	March 31,			December 31,
(In thousands, except share information)	2022			2021
	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	66,527		$	56,995
Receivables:
Trade, net		126,815			99,003
Other		4,317			6,971
Prepaid expenses and other		22,375			23,980
Total current assets		220,034			186,949
Property and equipment:
Revenue equipment, buildings and land, office equipment and other		955,760			956,476
Accumulated depreciation		(291,941	)		(274,199	)
Net property and equipment		663,819			682,277
Other noncurrent assets		1,545			1,464
Total assets	$	885,398		$	870,690
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	29,158		$	20,150
Insurance and claims accruals		42,592			42,014
Accrued and other current liabilities		37,632			31,395
Total current liabilities		109,382			93,559
Deferred income taxes		126,918			125,163
Noncurrent operating lease liabilities		336			291
Total liabilities		236,636			219,013
Stockholders’ equity:
Preferred stock, $.01 par value per share; 2,000,000 shares authorized; no shares issued and outstanding		-			-
Common stock, $.01 par value per share; 192,000,000 shares authorized; 81,946,875 shares at March 31, 2022, and 83,034,404 shares at December 31, 2021, issued and outstanding		819			830
Additional paid-in capital		60,256			85,718
Retained earnings		587,687			565,129
Total stockholders’ equity		648,762			651,677
Total liabilities and stockholders’ equity	$	885,398		$	870,690

MARTEN TRANSPORT, LTD.

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS

(Unaudited)

	Three Months
	Ended March 31,
(In thousands, except per share information)	2022			2021
Operating revenue	$	287,281		$	223,046
Operating expenses (income):
Salaries, wages and benefits		89,349			72,998
Purchased transportation		57,310			40,765
Fuel and fuel taxes		44,368			28,937
Supplies and maintenance		12,313			11,015
Depreciation		26,143			25,687
Operating taxes and licenses		2,640			2,712
Insurance and claims		12,704			11,446
Communications and utilities		2,265			2,083
Gain on disposition of revenue equipment		(4,540	)		(1,984	)
Other		8,871			5,389
Total operating expenses		251,423			199,048
Operating income		35,858			23,998
Other		(7	)		(10	)
Income before income taxes		35,865			24,008
Income taxes expense		8,332			6,002
Net income	$	27,533		$	18,006
Basic earnings per common share	$	0.33		$	0.22
Diluted earnings per common share	$	0.33		$	0.22
Dividends declared per common share	$	0.06		$	0.04

MARTEN TRANSPORT, LTD.

SEGMENT INFORMATION

(Unaudited)

							Dollar		Percentage
							Change		Change
	Three Months						Three Months		Three Months
	Ended						Ended		Ended
	March 31,						March 31,		March 31,
(Dollars in thousands)	2022			2021			2022 vs. 2021		2022 vs. 2021
Operating revenue:
Truckload revenue, net of fuel surcharge revenue	$	95,170		$	83,919		$	11,251		13.4	%
Truckload fuel surcharge revenue		17,620			10,996			6,624		60.2
Total Truckload revenue		112,790			94,915			17,875		18.8
Dedicated revenue, net of fuel surcharge revenue		78,421			66,902			11,519		17.2
Dedicated fuel surcharge revenue		18,339			11,335			7,004		61.8
Total Dedicated revenue		96,760			78,237			18,523		23.7
Intermodal revenue, net of fuel surcharge revenue		25,605			19,446			6,159		31.7
Intermodal fuel surcharge revenue		6,037			2,558			3,479		136.0
Total Intermodal revenue		31,642			22,004			9,638		43.8
Brokerage revenue		46,089			27,890			18,199		65.3
Total operating revenue	$	287,281		$	223,046		$	64,235		28.8	%
Operating income:
Truckload	$	15,571		$	11,415		$	4,156		36.4	%
Dedicated		10,645			8,936			1,709		19.1
Intermodal		5,036			1,461			3,575		244.7
Brokerage		4,606			2,186			2,420		110.7
Total operating income	$	35,858		$	23,998		$	11,860		49.4	%
Operating ratio:
Truckload		86.2	%		88.0	%
Dedicated		89.0			88.6
Intermodal		84.1			93.4
Brokerage		90.0			92.2
Consolidated operating ratio		87.5	%		89.2	%

MARTEN TRANSPORT, LTD.

OPERATING STATISTICS

(Unaudited)

	Three Months
	Ended March 31,
	2022			2021
Truckload Segment:
Revenue (in thousands)	$	112,790		$	94,915
Average revenue, net of fuel surcharges, per tractor per week(1)	$	4,977		$	4,057
Average tractors(1)		1,487			1,609
Average miles per trip		520			534
Non-revenue miles percentage(2)		10.4	%		10.3	%
Total miles (in thousands)		35,372			38,283
Dedicated Segment:
Revenue (in thousands)	$	96,760		$	78,237
Average revenue, net of fuel surcharges, per tractor per week(1)	$	3,851		$	3,214
Average tractors(1)		1,584			1,619
Average miles per trip		341			307
Non-revenue miles percentage(2)		1.2	%		0.8	%
Total miles (in thousands)		32,753			31,999
Intermodal Segment:
Revenue (in thousands)	$	31,642		$	22,004
Loads		8,294			7,982
Average tractors		162			134
Brokerage Segment:
Revenue (in thousands)	$	46,089		$	27,890
Loads		19,684			14,575
At March 31, 2022 and March 31, 2021:
Total tractors(1)		3,274			3,361
Average age of company tractors (in years)		1.6			1.6
Total trailers		5,428			5,344
Average age of company trailers (in years)		3.5			3.2
Ratio of trailers to tractors(1)		1.7			1.6
Total refrigerated containers		729			487

	Three Months
	Ended March 31,
(In thousands)	2022			2021
Net cash provided by operating activities	$	39,940		$	43,570
Net cash provided by/(used for) investing activities		409			(17,417	)
Net cash (used for) financing activities		(30,817	)		(3,697	)
Weighted average shares outstanding:
Basic		82,938			82,758
Diluted		83,246			83,359

(1)	Includes tractors driven by both company-employed drivers and independent contractors. Independent contractors provided 87 and 133 tractors as of March 31, 2022 and 2021, respectively.
(2)	Represents the percentage of miles for which the company is not compensated.