MARA Holdings, Inc. (MARA)Segall Bryant & Hamill, LLC opened a new position $38.3M

2.76M

Shares reported

0.45%

Disclosed portfolio weight

$38.3M

Reported value

Holdings as of

Jun 30, 2026

Filed

Aug 12, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Jun 18, 2026Company filing · Form 8-K · Executive change, Shareholder voteChanged a top executive or board member, and held a shareholder vote“As described under Item 5.07 below, an amendment to the MARA Holdings, Inc. Amended and Restated 2018 Equity Incentive Plan (as amended, the “2018 Plan”) to increase the number of shares authorized for issuance thereunder by 18,000,000 shares (the “Amendment”) was approved by the stockholders of MARA Holdings, Inc. (the “Company”) and became effective on June 18, 2026.”
2. Jul 2, 2026Company filing · Form 8-K · Material agreement, Acquisition or saleCompleted buying or selling a business or assets, and signed an important agreement (and 1 more item)“On July 9, 2026, the Company issued a press release announcing the Transaction. A copy of the press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference.”
3. Jul 29, 2026Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On July 29, 2026 and July 30, 2026, Barbara Humpton and Georges Antoun, respectively, notified the board of directors (the “Board”) of MARA Holdings, Inc. (the “Company”) of their decision to resign from the Board, effective as of July 31, 2026, which the Board accepted.”
4. Aug 6, 2026Company filing · Form 8-K · ResultsReported its results

What came next

1. Sep 21, 2026Company filing · Form 8-K · Material agreementSigned an important agreement
2. Oct 1, 2026InsiderCEO sold ~$309K of MARA shares in the open market

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for MARA Holdings, Inc.

For MARA Holdings, Inc., OQRO holds 1 insider filing (SEC Form 4 or Form 144) and 1 fund holdings report (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its MARA page.

How this filing works

• SEC Form 13F

Other disclosures at MARA Holdings, Inc.

• SEC Form 4Oct 2, 2026
• SEC Form 13F-HRMay 15, 2026
• SEC Form 13F-HRFeb 17, 2026
• SEC Form 13F-HRFeb 17, 2026
• SEC Form 13F-HRNov 14, 2025
• SEC Form 13F-HRNov 14, 2025

Everything OQRO holds on this company is on its MARA page.