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Rambus Inc

RMBS
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0000917273

In the last 90 days, Rambus Inc insiders filed 0 open-market purchases and 2 sales; 620 institutions reported holding it in 13F filings for Q2 2026, worth $13.3B in total; superinvestors Duquesne Family Office and Maverick Capital hold it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Rambus Inc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
2 filings
1 insider, $1.03M in total
Insiders trading
1
Net value
−$1.03M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Rambus Inc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Rambus Inc
NameTitleLast reported holdingLast filingFilings, past year
Kissner CharlesDirector8,747IndirectSep 24, 20263
Higashi EmikoDirector49,519Jun 3, 20263
Sayiner NecipDirector18,223Jun 3, 20263
Stang Eric BDirector19,218IndirectJun 2, 20263
Fan Xianzhi SeanEVP, COO168,358May 26, 20265
Shinn JohnSVP, General Counsel21,112May 26, 20265
Laub StevenDirector7,519May 11, 20262
Gagneja SumeetSVP, CFO41,320May 4, 20261
Rao MeeraDirector19,974Apr 27, 20264
Allen John KChief Accounting Officer17,131Apr 7, 20262
Peng VictorDirector2,391Apr 3, 20262
Seraphin LucPresident and CEO345,767Apr 3, 20263
Lynch DesmondSVP, CFO63,618Feb 24, 20263
Rogge Karen MDirector17,364Apr 5, 20230
Mitarotonda James ADirector13,946Apr 4, 20220
Saraf SanjayDirector50,241Apr 4, 20220
Jones Keith APrincipal Accounting Officer54,719Mar 3, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 18, 2021 (view filing)Aug 171 dayShinn JohnSVP, General CounselSSale−2.04K$23.68−$48.2K−5.2%36.9K after
Nov 18, 2021 (view filing)Nov 171 dayShinn JohnSVP, General CounselSSale−2.03K$24.55−$49.9K−5.5%34.8K after
Feb 16, 2022 (view filing)Feb 151 dayShinn JohnSVP, General CounselSSale−10.1K$26.81−$270.1K−25.9%28.8K after
Mar 9, 2022 (view filing)Mar 72 daysSeraphin LucPresident and CEOSSale−12.5K$28.11−$351.4K−3.8%313.7K after
Mar 10, 2022 (view filing)Mar 82 daysKissner CharlesDirectorSSale−40.0K$28.05−$1.12M−64.0%22.5K after
Mar 15, 2022 (view filing)Mar 141 daySeraphin LucPresident and CEOSSale−12.5K$26.68−$333.5K−4.0%301.2K after
Mar 22, 2022 (view filing)Mar 211 daySeraphin LucPresident and CEOSSale−12.5K$31.09−$388.6K−4.2%288.7K after
Mar 30, 2022 (view filing)Mar 282 daysSeraphin LucPresident and CEOSSale−12.5K$32.30−$403.8K−4.3%276.2K after
Apr 5, 2022 (view filing)Apr 41 daySeraphin LucPresident and CEOSSale−12.5K$31.43−$392.9K−4.5%263.7K after
Apr 12, 2022 (view filing)Apr 111 daySeraphin LucPresident and CEOSSale−12.5K$25.86−$323.3K−4.7%251.2K after
Apr 19, 2022 (view filing)Apr 181 daySeraphin LucPresident and CEOSSale−12.5K$25.76−$322.1K−4.9%240.8K after3 lots
Apr 27, 2022 (view filing)Apr 252 daysSeraphin LucPresident and CEOSSale−8.31K$25.30−$210.3K−3.3%240.8K after
May 9, 2022 (view filing)May 5-64 daysKissner CharlesDirectorSSale−40.0K$25.82−$1.03M−58.5%28.4K after2 lots
May 11, 2022 (view filing)May 92 daysKissner CharlesDirectorSSale−9.67K$24.78−$239.7K−34.0%18.7K after
Nov 3, 2022 (view filing)Nov 3Same dayStang Eric BDirectorSSale−7.50K$34.25−$256.9K−18.4%33.2K after
Nov 16, 2022 (view filing)Nov 151 dayFan Xianzhi SeanCOOSSale−51.8K$38.51−$1.99M−21.3%191.0K after
Nov 16, 2022 (view filing)Nov 151 daySayiner NecipDirectorSSale−15.0K$38.16−$572.4K−35.0%27.9K after
Nov 18, 2022 (view filing)Nov 162 daysFan Xianzhi SeanCOOSSale−10.3K$38.30−$393.6K−5.4%180.7K after
Nov 21, 2022 (view filing)Nov 183 daysFan Xianzhi SeanCOOSSale−52.9K$37.88−$2.00M−29.2%127.9K after
Feb 13, 2023 (view filing)Feb 103 daysSayiner NecipDirectorSSale−2.87K$45.53−$130.8K−10.3%25.0K after
Feb 14, 2023 (view filing)Feb 131 dayStang Eric BDirectorSSale−6.00K$45.46−$272.8K−18.1%27.2K after
Mar 7, 2023 (view filing)Mar 61 daySeraphin LucPresident and CEOSSale−12.5K$44.83−$560.4K−3.3%367.2K after
Mar 7, 2023 (view filing)Mar 61 dayShinn JohnSVP, General CounselSSale−8.51K$44.82−$381.2K−26.1%24.1K after
Mar 14, 2023 (view filing)Mar 131 daySeraphin LucPresident and CEOSSale−12.5K$41.06−$513.3K−3.4%354.7K after
Mar 21, 2023 (view filing)Mar 201 daySeraphin LucPresident and CEOSSale−12.5K$44.20−$552.5K−3.5%342.2K after
Mar 28, 2023 (view filing)Mar 271 daySeraphin LucPresident and CEOSSale−12.5K$44.99−$562.4K−3.7%329.7K after
Apr 4, 2023 (view filing)Apr 31 daySeraphin LucPresident and CEOSSale−12.5K$51.28−$641.0K−3.8%317.2K after
Apr 11, 2023 (view filing)Apr 101 daySeraphin LucPresident and CEOSSale−12.5K$48.68−$608.5K−3.9%304.7K after
Apr 18, 2023 (view filing)Apr 171 daySeraphin LucPresident and CEOSSale−12.5K$49.58−$619.8K−4.1%292.2K after
Apr 25, 2023 (view filing)Apr 241 daySeraphin LucPresident and CEOSSale−12.5K$49.41−$617.6K−4.3%279.7K after
May 2, 2023 (view filing)May 11 daySeraphin LucPresident and CEOSSale−12.5K$44.83−$560.4K−4.5%267.9K after
May 9, 2023 (view filing)May 81 daySeraphin LucPresident and CEOSSale−12.5K$47.98−$599.8K−4.7%255.4K after
May 16, 2023 (view filing)May 151 daySeraphin LucPresident and CEOSSale−4.56K$49.39−$225.0K−1.8%255.3K after3 lots
Aug 17, 2023 (view filing)Aug 161 dayStang Eric BDirectorSSale−8.54K$53.25−$454.6K−31.4%18.6K after
Aug 30, 2023 (view filing)Aug 291 dayFan Xianzhi SeanCOOSSale−17.3K$54.99−$951.8K−9.3%168.2K after
Nov 7, 2023 (view filing)Nov 61 daySayiner NecipDirectorSSale−10.0K$57.43−$574.3K−25.9%28.7K after
Nov 9, 2023 (view filing)Nov 81 dayHigashi EmikoDirectorSSale−8.00K$60.00−$480.0K−12.2%57.7K after
Nov 16, 2023 (view filing)Nov 151 dayLaub StevenDirectorSSale−2.00K$66.91−$133.8K−20.5%7.76K after
Nov 16, 2023 (view filing)Nov 151 dayStang Eric BDirectorSSale−8.69K$67.16−$583.3K−46.6%9.96K after
Dec 11, 2023 (view filing)Dec 7-84 daysLynch DesmondSVP, CFOSSale−8.37K$64.75−$541.7K−12.7%57.4K after2 lots10b5-1
Dec 12, 2023 (view filing)Dec 111 dayFan Xianzhi SeanCOOSSale−16.9K$66.35−$1.12M−10.0%151.3K after10b5-1
Feb 6, 2024 (view filing)Feb 51 dayFan Xianzhi SeanSVP, COOSSale−20.0K$68.73−$1.37M−12.3%143.2K after
Feb 13, 2024 (view filing)Feb 121 dayFan Xianzhi SeanSVP, COOSSale−20.0K$58.53−$1.17M−14.0%123.2K after10b5-1
Feb 21, 2024 (view filing)Feb 201 dayFan Xianzhi SeanSVP, COOSSale−2.00K$55.00−$110.2K−1.6%121.2K after10b5-1
Mar 4, 2024 (view filing)Mar 1-43 daysFan Xianzhi SeanSVP, COOSSale−35.8K$62.72−$2.24M−29.5%85.5K after2 lots10b5-1
Mar 6, 2024 (view filing)Mar 51 daySeraphin LucPresident and CEOSSale−15.0K$62.17−$932.5K−4.7%304.8K after2 lots10b5-1
Mar 8, 2024 (view filing)Mar 71 dayShinn JohnSVP, General CounselSSale−3.93K$64.93−$255.0K−12.1%28.4K after10b5-1
Mar 12, 2024 (view filing)Mar 111 dayLynch DesmondSVP, CFOSSale−7.84K$62.18−$487.3K−15.7%42.0K after2 lots10b5-1
Mar 13, 2024 (view filing)Mar 121 daySeraphin LucPresident and CEOSSale−15.0K$62.69−$940.3K−4.9%289.8K after2 lots10b5-1
Mar 13, 2024 (view filing)Mar 121 dayShinn JohnSVP, General CounselSSale−3.89K$62.68−$243.8K−13.7%24.6K after10b5-1