1 unchanged sentence
There have been no material changes in the risk factors disclosed by us under Part I, Item 1A.
−Removed: Risk Factors contained in the Annual Report on Form 10-K for the year ended December 31, 2019, except for the addition of the following risk factor:
−Removed: The recent COVID-19 pandemic could negatively impact our business and results of operations.
−Removed:  
−Removed: Our business may face risks related to the recent outbreak of the COVID-19 pandemic, which has been declared a “pandemic”
−Removed: by the World Health Organization.
−Removed: The full impact of the pandemic is unknown and rapidly evolving.
−Removed: Although transportation services are generally considered essential services and the overall demand for our services has continued, we are experiencing significant changes in demand from certain customers in certain freight lanes.
−Removed: We are unable to predict if overall demand for our services will continue at current levels or decrease as a result of the pandemic and its ongoing impact to the economy going forward.
−Removed: We continue to monitor the pandemic’s impact on the health and safety of our employees, but any widespread outbreak among our employees may negatively impact our business.
−Removed: Some of our customers are encountering significant disruptions to their business and may represent a greater risk for collection of amounts owed, and we may be required to increase our allowance for credit losses.
−Removed: The extent to which the pandemic impacts our business and operating results will depend on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of the pandemic and the actions taken to contain the virus or treat its impact as well as the long-term economic impact of the virus, among others.
+Added: Risk Factors contained in the Annual Report on Form 10-K for the year ended December 31, 2019, or under Part II, Item 1A.
+Added: Risk Factors contained in the Quarterly Report on Form 10-Q for the quarter ended March 31, 2020.
+Added: Method of Filing
+Added: Form of Performance Unit Award Agreement for the 2015 Equity Incentive Plan
+Added: Incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed May 11, 2020.
+Added: Certification pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, by Randolph L.
+Added: Marten, the Registrant’s Chief Executive Officer (Principal Executive Officer)
+Added: Filed with this Report.
+Added: Certification pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, by James J.
+Added: Hinnendael, the Registrant’s Executive Vice President and Chief Financial Officer (Principal Financial Officer)
+Added: Filed with this Report.
+Added: Certification pursuant to 18 U.S.C.
+Added: Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
+Added: Filed with this Report.
+Added: The following financial information from Marten Transport, Ltd.’s Quarterly Report on Form 10-Q for the period ended June 30, 2020, filed with the SEC on August 7, 2020, formatted in iXBRL, or Inline eXtensible Business Reporting Language:
+Added: (i) Consolidated Condensed Balance Sheets, (ii) Consolidated Condensed Statements of Operations, (iii) Consolidated Condensed Statements of Stockholders’
+Added: Equity, (iv) 
+Added: Consolidated Condensed Statements of Cash Flows, and (v) Notes to Consolidated Condensed Financial Statements
+Added: Filed with this Report.
+Added: The cover page from Marten Transport, Ltd.’s Quarterly Report on Form 10-Q for the period ended June 30, 2020, formatted in iXBRL, included in Exhibit 101
+Added: Filed with this Report.
+Added: 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, thereunto duly authorized.
+Added: MARTEN TRANSPORT, LTD.
+Added: August 7, 2020
+Added: /s/ Randolph L.
+Added: Chief Executive Officer
+Added: (Principal Executive Officer)
+Added: August 7, 2020
+Added: Executive Vice President and Chief Financial Officer
+Added: (Principal Financial and Accounting Officer)
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.