Rambus Inc
Could not find a ticker for this position, may be a filing error
A fabless designer of memory interface chips and silicon IP that keep fast-moving data flowing, its DDR5 and LPDDR5 chipsets plus controller and security cores power data center and AI systems for chip makers and server builders. Founded in 1990 by engineers Mark Horowitz and Mike Farmwald to close the widening gap between processor and memory speeds, the company's name often draws playful comparisons to action hero Rambo—though the similarity is purely coincidental.
1.375% convertible bond due 02/01/2023
Granted 5.4K
Granted 1.28M · Sold 423.8K
Granted 732.0K · Sold 317.1K
Granted 143.1K · Sold 45.5K
Granted 58.1K · Sold 89.7K
Granted 7.8K
Granted 18.1K · Sold 25.2K
Granted 5.4K
Granted 41.3K
Granted 18.1K · Sold 59.8K
Granted 97.7K · Sold 65.0K
Granted 18.1K · Sold 20.6K
Granted 58.1K · Sold 62.3K
Granted 9.1K
Granted 11.8K
Granted 18.8K · Sold 11.3K
Granted 2.4K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Mitarotonda James ADirector · 1 transaction | +1% | 544.0Kas of Apr 2022 | 5.4K | — | — |
| Seraphin LucPresident and CEO, Director · 78 transactions | +61.1% | 345.8K | 1.28M | — | 423.8K |
| Fan Xianzhi SeanEVP, COO · 36 transactions | -0.7% | 168.4K | 732.0K | — | 317.1K |
| Lynch DesmondSVP, CFO · 26 transactions | — | 63.6K | 143.1K | — | 45.5K |
| Kissner CharlesDirector · 10 transactions | -34.8% | 59.3K | 58.1K | — | 89.7K |
| Jones Keith APrincipal Accounting Officer · 4 transactions | -2.6% | 54.7Kas of Mar 2022 | 7.8K | — | — |
| Higashi EmikoDirector · 11 transactions | -3.7% | 54.5K | 18.1K | — | 25.2K |
| Saraf SanjayDirector · 1 transaction | +12.1% | 50.2Kas of Apr 2022 | 5.4K | — | — |
| Gagneja SumeetSVP, CFO · 2 transactions | — | 41.3K | 41.3K | — | — |
| Stang Eric BDirector · 15 transactions | -66% | 21.4K | 18.1K | — | 59.8K |
| Shinn JohnSVP, General Counsel · 35 transactions | -42.7% | 21.1K | 97.7K | — | 65.0K |
| Rao MeeraDirector · 10 transactions | -11.1% | 20.0K | 18.1K | — | 20.6K |
| Sayiner NecipDirector · 16 transactions | -18.9% | 18.2K | 58.1K | — | 62.3K |
| Rogge Karen MDirector · 2 transactions | +109.1% | 17.4Kas of Apr 2023 | 9.1K | — | — |
| Allen John KChief Accounting Officer · 9 transactions | — | 17.1K | 11.8K | — | — |
| Laub StevenDirector · 10 transactions | — | 7.5K | 18.8K | — | 11.3K |
| Peng VictorDirector · 2 transactions | — | 2.4K | 2.4K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -1.12M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.