Rambus (RMBS): Stephens Investment Management Group LLC added to its stake +214K shares

408K

Shares reported · +214K vs prior quarter

0.48%

Disclosed portfolio weight

$35.1M

Reported value

Holdings as of

Mar 31, 2026

Filed

Apr 28, 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. Mar 2, 2026Insider · 1 personInsiders: 6 sales (~$3.9M)
2. Mar 3, 2026Insider · 1 personInsiders: 3 sales (~$426K)
3. Mar 10, 2026Insider · 1 personInsiders: 2 sales (~$404K)
4. Apr 2, 2026Insider · 1 personInsiders: 3 sales (~$470K)
5. Apr 14, 2026InsiderDirector sold ~$1.01M of RMBS shares in the open market
6. Apr 24, 2026InsiderDirector sold ~$447K of RMBS shares in the open market
7. Apr 27, 2026Company filing · Form 8-K · ResultsReported its results

What came next

1. Apr 29, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“Departure of Directors or Certain Officers; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. The Board of Directors (the “Board”) of Rambus Inc. (“Rambus” or the “Company”) has appointed Sumeet Gagneja as the Senior Vice President and Chief Financial Officer of the Company, effective April 29, 2026, reporting to Luc Seraphin, Chief Executive Officer of the Company.”
2. May 7, 2026InsiderDirector sold ~$188K of RMBS shares in the open market
3. May 8, 2026Insider · Their largest sale since 2022Director sold ~$1.28M of RMBS shares in the open market
4. May 22, 2026InsiderOfficer sold ~$144K of RMBS shares in the open market
5. May 26, 2026Insider · 2 peopleInsiders: 3 sales (~$6.5M)
6. Jun 1, 2026InsiderDirector sold ~$730K of RMBS shares in the open market
7. Jun 2, 2026Insider · 1 personInsiders: 2 sales (~$1.6M)
8. Jun 3, 2026InsiderDirector sold ~$851K of RMBS shares in the open market
9. Jul 27, 2026Company filing · Form 8-K · ResultsReported its results
10. Aug 4, 2026Company filing · Form 8-K · Material agreement, New debtSigned an important agreement, and took on new debt or obligations
11. Aug 7, 2026InsiderDirector sold ~$505K of RMBS 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 Rambus

For Rambus, OQRO holds 3 insider filings (SEC Form 4 or Form 144) 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 RMBS page.

How this filing works

• SEC Form 13F

Other disclosures at Rambus

• SEC Form 4Oct 5, 2026
• SEC Form 144Oct 2, 2026
• SEC Form 4Sep 24, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026

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