Rambus Inc. RMBS NASDAQ

NASDAQ Global Select • Technology • Semiconductors • US • USD

SharesGrow Score

73/100

4/7 Pass

SharesGrow Intrinsic Value

Rambus Inc. (RMBS) has 20 known insider and institutional holders on record. The largest holder is FARMWALD MIKE with 2,394,849 shares. Other notable holders include Seraphin Luc and MATHUR RAHUL.

Over the last 12 months, insiders have made 45 transactions in RMBS stock — 8 buys (valued at RSU Award) and 24 sells (valued at $6.18M). Insider selling has exceeded buying during this period.

RMBS Insider Ownership

Top Holder

FARMWALD MIKE

2,394,849 shares

Buys (12 mo)

$0.00 value

Sells (12 mo)

$6.18M value

12-Month Transaction Activity

Buy 18%

Sell 53%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Farmwald Mike	Director	2,394,849	2012-10-03	100%
2	Seraphin Luc	President and CEO	351,193	2026-04-03	15%
3	Mathur Rahul	SVP, CFO	242,447	2021-02-04	10%
4	Black Ronald D	President & CEO	217,755	2018-02-05	9%
5	Fan Xianzhi Sean	EVP, COO	206,272	2026-04-03	9%
6	Hughes Harold	Director	203,807	2013-04-25	9%
7	Rishi Satish	SVP Finance, CFO	159,632	2016-08-05	7%
8	Kim Jae	SVP, Gc & Secretary	129,279	2021-02-04	5%
9	Sofaer Abraham D	Director	102,526	2012-12-31	4%
10	Holt Sharon E	SVP, GM Sbg	69,358	2012-08-30	3%
11	Higashi Emiko	Director	64,519	2026-04-03	3%
12	Lynch Desmond	SVP, CFO	63,618	2026-02-24	3%
13	Donnelly Kevin	SVP, GM Mid	60,000	2014-02-05	3%
14	Scott Martin	SVP, GM Nbg	60,000	2014-02-05	3%
15	Shrigley David A	Director	56,311	2019-05-02	2%
16	Fisher Ellis Thomas	Director	55,833	2020-04-02	2%
17	Jones Keith A	Principal Accounting Officer	54,719	2022-03-03	2%
18	Saraf Sanjay	Director	50,241	2022-04-04	2%
19	Kissner Charles	Director	40,545	2026-04-03	2%
20	Lang Gregory S	Director	40,000	2020-08-04	2%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-04-03	Allen John K	Chief Accounting Officer	Tax Withholding of RSU	1,131	$92.22	$104.3K
2026-04-01	Shinn John	SVP, General Counsel	Tax Withholding of RSU	1,913	$89.95	$172.07K
2026-04-01	Fan Xianzhi Sean	EVP, COO	Tax Withholding of RSU	9,916	$89.95	$891.94K
2026-04-01	Rao Meera	Director	RSU Award	2,223	-	-
2026-04-01	Allen John K	Chief Accounting Officer	Tax Withholding of RSU	658	$89.95	$59.19K
2026-04-02	Seraphin Luc	President and CEO	Informative Sell	165	$88.35	$14.58K
2026-04-01	Seraphin Luc	President and CEO	Tax Withholding of RSU	12,561	$89.95	$1.13M
2026-04-01	Sayiner Necip	Director	RSU Award	2,223	-	-
2026-04-01	Higashi Emiko	Director	RSU Award	2,223	-	-
2026-04-01	Stang Eric B	Director	RSU Award	2,223	-	-
2026-04-01	Laub Steven	Director	RSU Award	2,223	-	-
2026-04-01	Kissner Charles	Director	RSU Award	2,223	-	-
2026-04-01	Peng Victor	Director	RSU Award	2,223	-	-
2026-03-10	Shinn John	SVP, General Counsel	Informative Sell	200	$89.55	$17.91K
2026-03-03	Shinn John	SVP, General Counsel	Informative Sell	700	$94.89	$66.42K
2026-03-02	Seraphin Luc	President and CEO	Informative Sell	1,300	$101.65	$132.15K
2026-03-02	Peng Victor	Director	RSU Award	168	-	-
2026-02-23	Lynch Desmond	SVP, CFO	Informative Sell	4,273	$101.53	$433.84K
2026-02-12	Peng Victor	Officer	Unknown	-	-	-
2026-02-01	Lynch Desmond	SVP, CFO	Tax Withholding of RSU	22,105	$113.71	$2.51M
2026-02-01	Shinn John	SVP, General Counsel	Tax Withholding of RSU	9,884	$113.71	$1.12M
2026-02-01	Fan Xianzhi Sean	EVP, COO	Tax Withholding of RSU	92,403	$113.71	$10.51M
2026-02-01	Seraphin Luc	President and CEO	Tax Withholding of RSU	92,523	$113.71	$10.52M
2025-11-21	Fan Xianzhi Sean	EVP, COO	Gift (Given)	300	-	-
2025-11-19	Fan Xianzhi Sean	EVP, COO	Gift (Given)	300	-	-