MRTN MARTEN TRANSPORT LTD
company
SEC Filings & Insider Trading Activity 2026

CIK: 799167
Industrials
Trucking (No Local) 95 filings
Russell 2000

Latest MARTEN TRANSPORT LTD (MRTN) SEC EDGAR filings in 2026, including the most recent 10-K annual report filed on February 27, 2026, a 10-Q quarterly report filed on May 8, 2026, an 8-K current report filed on July 23, 2026. SignalX aggregates every new 10-K annual report, 10-Q quarterly report, 8-K current report, and Form 4 insider transaction for MARTEN TRANSPORT LTD (MRTN) (SEC CIK 799167), with AI-powered section-by-section summaries updated daily.

10-Q: 61
10-K: 21
SC 13G: 8
8-K: 5

Latest 2026 SEC Filing Dates

10-K Annual Report
Feb 27, 2026
10-Q Quarterly Report
May 8, 2026
8-K Current Report
Jul 23, 2026

Go deeper on MARTEN TRANSPORT LTD

Ask AI about MRTN filings. Chat with the 10-K, 10-Q, and 8-K for instant answers on financials, risks, and guidance.

Track institutional money. See which funds are building or cutting MRTN positions, quarter over quarter.

Catch cross-signals. Spot when insider buying, fund accumulation, and activist stakes line up on MRTN.

See Pro plans →

Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4

FormFiling DatePeriodAnalysisSEC
8-K
Jul 23, 2026---
8-K
Jun 18, 2026---
8-K
May 11, 2026--
10-Q
May 8, 2026Mar 31, 2026-
8-K
Apr 23, 2026---
10-K
Feb 27, 2026Dec 31, 2025-
8-K
Jan 27, 2026--
10-Q
Nov 7, 2025Sep 30, 2025-
10-Q
Aug 8, 2025Jun 30, 2025-
10-Q
May 9, 2025Mar 31, 2025-
10-K
Feb 28, 2025Dec 31, 2024-
10-Q
Nov 8, 2024Sep 30, 2024-
10-Q
Aug 8, 2024Jun 30, 2024-
10-Q
May 9, 2024Mar 31, 2024-
10-K
Feb 28, 2024Dec 31, 2023-
10-Q
Nov 8, 2023Sep 30, 2023-
10-Q
Aug 7, 2023Jun 30, 2023-
10-Q
May 5, 2023Mar 31, 2023-
10-K
Feb 28, 2023Dec 31, 2022-
SC 13G
Feb 9, 2023--
10-Q
Nov 8, 2022Sep 30, 2022-
10-Q
Aug 8, 2022Jun 30, 2022-
10-Q
May 5, 2022Mar 31, 2022-
10-K
Feb 28, 2022Dec 31, 2021-
10-Q
Nov 8, 2021Sep 30, 2021-

13F Fund Holdings: Quarterly Trend

Latest: Q1 2026

Aggregate MRTN share value held by 13F filers tracked by SignalX, by quarter.

Position changes: Q4 2025 → Q1 2026
Top Buyers
Top Sellers
New Positions
Closed Positions

Source: 13F-HR filings on SEC EDGAR (aggregated from 195 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe.

Related Industrials Companies

Browse all Industrials companies →

Frequently Asked Questions

What are the latest MRTN SEC filings in 2026?

MARTEN TRANSPORT LTD (MRTN) has filed a 10-K annual report on February 27, 2026, a 10-Q quarterly report on May 8, 2026, an 8-K current report on July 23, 2026 with the SEC. SignalX tracks every new SEC EDGAR filing daily, including 10-K, 10-Q, 8-K, and Form 4 insider transactions, with AI-powered summaries of key sections.

When did MRTN file its most recent 10-K annual report?

MARTEN TRANSPORT LTD (MRTN) filed its most recent 10-K annual report on February 27, 2026. The 10-K includes audited financial statements, business overview, risk factors, and management discussion, all available on SignalX with AI-generated summaries and XBRL financial data.

How do I view MRTN 10-Q quarterly reports?

MARTEN TRANSPORT LTD (MRTN)'s most recent 10-Q quarterly report was filed on May 8, 2026. SignalX displays every MRTN 10-Q with AI-generated summaries of the MD&A (Management Discussion & Analysis) and Risk Factors sections, plus links to the original SEC EDGAR document.

What 8-K current reports has MRTN filed recently?

MARTEN TRANSPORT LTD (MRTN)'s most recent 8-K was filed on July 23, 2026. 8-K filings disclose material corporate events such as earnings releases, executive changes, mergers, and other significant developments. SignalX surfaces each 8-K with item-level summaries so you can quickly see what happened.

Where can I find MRTN insider trading activity (Form 4)?

SignalX aggregates every MRTN Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.

How often does MRTN file with the SEC?

MARTEN TRANSPORT LTD (MRTN) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new MRTN filing with AI-powered analysis.

What is the difference between 10-K, 10-Q, and 8-K SEC filings?

A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs, such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for MARTEN TRANSPORT LTD (MRTN).

What is MRTN's SEC CIK number?

MARTEN TRANSPORT LTD (MRTN)'s SEC CIK (Central Index Key) number is 799167. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 799167 to look up all MRTN filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.

Stay on top of MARTEN TRANSPORT LTD SEC filings

Insider trading data, fund holdings, cross-signal detection, and AI-powered analysis for 95+ filings.