RMBS

Rambus INC

Insider trading activity for Rambus INC, straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

-$1M

net selling

Bought(0 · 0 insiders): $0
Sold(2 · 1 insiders): $1M

Past 6 months

-$14.3M

net selling

Bought(0 · 0 insiders): $0
Sold(17 · 9 insiders): $14.3M

Past 12 months

-$21.4M

net selling

Bought(0 · 0 insiders): $0
Sold(34 · 10 insiders): $21.4M

Transaction history

The 80 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Sep 22	Kissner Charles	Director	SSELL◷	5,000	$105.00	$525K	-36.4%	Open the original filing on SEC.gov
Aug 7	Kissner Charles	Director	SSELL◷	5,000	$100.92	$504.6K	-26.7%	Open the original filing on SEC.gov
Jun 3	Sayiner Necip	Director	SSELL	5,000	$170.15	$850.8K	-21.5%	Open the original filing on SEC.gov
Jun 2	Higashi Emiko	Director	SSELL	5,000	$158.00	$790K	-9.2%	Open the original filing on SEC.gov
Jun 2	Higashi Emiko	Director	SSELL	5,000	$163.00	$815K	-8.4%	Open the original filing on SEC.gov
Jun 1	Stang Eric B	Director	SSELL	5,000	$146.00	$730K	-20.6%	Open the original filing on SEC.gov
May 26	Fan Xianzhi Sean	EVP, COO	SSELL	100	$152.35	$15.2K	<0.1%	Open the original filing on SEC.gov
May 26	Fan Xianzhi Sean	EVP, COO	SSELL	37,814	$151.69	$5.7M	-18.3%	Open the original filing on SEC.gov
May 26	Higashi Emiko	Director	SSELL	5,000	$157.57	$787.9K	-7.8%	Open the original filing on SEC.gov
May 22	Shinn John	SVP, General Counsel	SSELL	1,000	$143.63	$143.6K	-4.5%	Open the original filing on SEC.gov
May 8	Sayiner Necip	Director	SSELL	9,824	$130.18	$1.3M	-29.7%	Open the original filing on SEC.gov
May 7	Laub Steven	Director	SSELL	1,500	$125.52	$188.3K	-16.6%	Open the original filing on SEC.gov
May 1	Gagneja Sumeet	SVP, CFO	AGRANT	26,802	—	—	+184.6%	Open the original filing on SEC.gov
May 1	Gagneja Sumeet	SVP, CFO	AGRANT	14,518	—	—	—	Open the original filing on SEC.gov
Apr 24	Rao Meera	Director	SSELL◷	2,972	$150.30	$446.7K	-13.0%	Open the original filing on SEC.gov
Apr 14	Rao Meera	Director	SSELL◷	8,538	$118.08	$1M	-27.1%	Open the original filing on SEC.gov
Apr 3	Allen John K	Chief Accounting Officer	FTAX	1,131	$92.22	$104.3K	-6.2%	Open the original filing on SEC.gov
Apr 2	Seraphin Luc	President and CEO	SSELL◷	165	$88.35	$14.6K	<0.1%	Open the original filing on SEC.gov
Apr 2	Seraphin Luc	President and CEO	SSELL◷	2,750	$87.11	$239.6K	-0.8%	Open the original filing on SEC.gov
Apr 2	Seraphin Luc	President and CEO	SSELL◷	2,511	$86.04	$216K	-0.7%	Open the original filing on SEC.gov
Apr 1	Rao Meera	Director	AGRANT	2,223	—	—	+7.6%	Open the original filing on SEC.gov
Apr 1	Sayiner Necip	Director	AGRANT	2,223	—	—	+7.2%	Open the original filing on SEC.gov
Apr 1	Stang Eric B	Director	AGRANT	2,223	—	—	—	Open the original filing on SEC.gov
Apr 1	Shinn John	SVP, General Counsel	FTAX	1,913	$89.95	$172.1K	-8.0%	Open the original filing on SEC.gov
Apr 1	Shinn John	SVP, General Counsel	AGRANT	5,558	—	—	+30.1%	Open the original filing on SEC.gov
Apr 1	Seraphin Luc	President and CEO	FTAX◷	12,561	$89.95	$1.1M	-3.5%	Open the original filing on SEC.gov
Apr 1	Seraphin Luc	President and CEO	AGRANT◷	32,684	—	—	+9.9%	Open the original filing on SEC.gov
Apr 1	Peng Victor	Director	AGRANT	2,223	—	—	+1,323%	Open the original filing on SEC.gov
Apr 1	Laub Steven	Director	AGRANT	2,223	—	—	+32.7%	Open the original filing on SEC.gov
Apr 1	Kissner Charles	Director	AGRANT	2,223	—	—	+5.8%	Open the original filing on SEC.gov
Apr 1	Higashi Emiko	Director	AGRANT	2,223	—	—	+3.6%	Open the original filing on SEC.gov
Apr 1	Fan Xianzhi Sean	EVP, COO	FTAX	9,916	$89.95	$891.9K	-4.6%	Open the original filing on SEC.gov
Apr 1	Fan Xianzhi Sean	EVP, COO	AGRANT	22,234	—	—	+11.5%	Open the original filing on SEC.gov
Apr 1	Allen John K	Chief Accounting Officer	FTAX	658	$89.95	$59.2K	-3.5%	Open the original filing on SEC.gov
Apr 1	Allen John K	Chief Accounting Officer	FTAX	495	$89.95	$44.5K	-2.5%	Open the original filing on SEC.gov
Apr 1	Allen John K	Chief Accounting Officer	AGRANT	2,779	—	—	+16.7%	Open the original filing on SEC.gov
Mar 10	Shinn John	SVP, General Counsel	SSELL◷	200	$89.55	$17.9K	-1.1%	Open the original filing on SEC.gov
Mar 10	Shinn John	SVP, General Counsel	SSELL◷	4,356	$88.64	$386.1K	-18.9%	Open the original filing on SEC.gov
Mar 3	Shinn John	SVP, General Counsel	SSELL◷	700	$94.89	$66.4K	-2.9%	Open the original filing on SEC.gov
Mar 3	Shinn John	SVP, General Counsel	SSELL◷	1,603	$94.07	$150.8K	-6.3%	Open the original filing on SEC.gov
Mar 3	Shinn John	SVP, General Counsel	SSELL◷	2,254	$92.77	$209.1K	-8.2%	Open the original filing on SEC.gov
Mar 2	Seraphin Luc	President and CEO	SSELL◷	1,300	$101.65	$132.1K	-0.4%	Open the original filing on SEC.gov
Mar 2	Seraphin Luc	President and CEO	SSELL◷	6,587	$100.20	$660K	-1.9%	Open the original filing on SEC.gov
Mar 2	Seraphin Luc	President and CEO	SSELL◷	9,469	$99.17	$939K	-2.7%	Open the original filing on SEC.gov
Mar 2	Seraphin Luc	President and CEO	SSELL◷	13,654	$98.22	$1.3M	-3.8%	Open the original filing on SEC.gov
Mar 2	Seraphin Luc	President and CEO	SSELL◷	7,225	$97.38	$703.6K	-2.0%	Open the original filing on SEC.gov
Mar 2	Seraphin Luc	President and CEO	SSELL◷	1,679	$95.83	$160.9K	-0.4%	Open the original filing on SEC.gov
Mar 2	Peng Victor	Director	AGRANT	168	—	—	—	Open the original filing on SEC.gov
Feb 23	Lynch Desmond	SVP, CFO	SSELL◷	4,273	$101.53	$433.8K	-6.3%	Open the original filing on SEC.gov
Feb 1	Shinn John	SVP, General Counsel	FTAX	9,884	$113.71	$1.1M	-26.4%	Open the original filing on SEC.gov
Feb 1	Shinn John	SVP, General Counsel	AGRANT	17,276	—	—	+85.6%	Open the original filing on SEC.gov
Feb 1	Seraphin Luc	President and CEO	FTAX	92,523	$113.71	$10.5M	-20.0%	Open the original filing on SEC.gov
Feb 1	Seraphin Luc	President and CEO	AGRANT	143,744	—	—	+45.0%	Open the original filing on SEC.gov
Feb 1	Lynch Desmond	SVP, CFO	FTAX	22,105	$113.71	$2.5M	-24.6%	Open the original filing on SEC.gov
Feb 1	Lynch Desmond	SVP, CFO	AGRANT	34,554	—	—	+62.3%	Open the original filing on SEC.gov
Feb 1	Fan Xianzhi Sean	EVP, COO	FTAX	92,403	$113.71	$10.5M	-32.3%	Open the original filing on SEC.gov
Feb 1	Fan Xianzhi Sean	EVP, COO	AGRANT	148,802	—	—	+108.2%	Open the original filing on SEC.gov
Nov 21, 2025	Fan Xianzhi Sean	EVP, COO	GGIFT	300	—	—	-0.2%	Open the original filing on SEC.gov
Nov 19, 2025	Fan Xianzhi Sean	EVP, COO	GGIFT	300	—	—	-0.2%	Open the original filing on SEC.gov
Nov 10, 2025	Stang Eric B	Director	SSELL	4,000	$111.79	$447.1K	-16.4%	Open the original filing on SEC.gov
Nov 7, 2025	Stang Eric B	Director	SSELL	5,000	$102.35	$511.8K	-17.0%	Open the original filing on SEC.gov
Oct 6, 2025	Lynch Desmond	SVP, CFO	SSELL◷	3,607	$101.99	$367.9K	-6.1%	Open the original filing on SEC.gov
Oct 6, 2025	Lynch Desmond	SVP, CFO	SSELL◷	5,467	$101.17	$553.1K	-8.5%	Open the original filing on SEC.gov
Oct 1, 2025	Rao Meera	Director	SSELL◷	653	$101.99	$66.6K	-2.2%	Open the original filing on SEC.gov
Sep 15, 2025	Lynch Desmond	SVP, CFO	SSELL◷	9,074	$91.70	$832.1K	-12.3%	Open the original filing on SEC.gov
Sep 11, 2025	Sayiner Necip	Director	SSELL	7,500	$85.63	$642.2K	-19.6%	Open the original filing on SEC.gov
Sep 2, 2025	Rao Meera	Director	SSELL◷	3,000	$71.72	$215.2K	-9.1%	Open the original filing on SEC.gov
Sep 1, 2025	Lynch Desmond	SVP, CFO	FTAX	2,725	$73.49	$200.2K	-3.6%	Open the original filing on SEC.gov
Aug 29, 2025	Laub Steven	Director	SSELL	2,261	$78.72	$178K	-25.0%	Open the original filing on SEC.gov
Aug 13, 2025	Higashi Emiko	Director	SSELL	1,075	$77.75	$83.6K	-1.7%	Open the original filing on SEC.gov
Aug 8, 2025	Sayiner Necip	Director	SSELL	7,500	$73.53	$551.4K	-16.4%	Open the original filing on SEC.gov
Aug 4, 2025	Shinn John	SVP, General Counsel	SSELL	790	$74.61	$58.9K	-3.8%	Open the original filing on SEC.gov
Aug 4, 2025	Higashi Emiko	Director	SSELL	1,111	$75.00	$83.3K	-1.7%	Open the original filing on SEC.gov
May 27, 2025	Laub Steven	Director	SSELL	1,847	$55.13	$101.8K	-16.9%	Open the original filing on SEC.gov
May 19, 2025	Laub Steven	Director	SSELL	3,653	$55.56	$203K	-25.1%	Open the original filing on SEC.gov
May 9, 2025	Stang Eric B	Director	SSELL	3,653	$51.13	$186.8K	-11.1%	Open the original filing on SEC.gov
May 5, 2025	Lynch Desmond	SVP, CFO	SSELL◷	3,118	$50.31	$156.9K	-4.0%	Open the original filing on SEC.gov
Apr 23, 2025	Seraphin Luc	President and CEO	SSELL◷	6,348	$46.97	$298.2K	-1.9%	Open the original filing on SEC.gov
Apr 22, 2025	Seraphin Luc	President and CEO	SSELL◷	1,255	$45.00	$56.5K	-0.4%	Open the original filing on SEC.gov
Apr 15, 2025	Seraphin Luc	President and CEO	SSELL◷	10,000	$47.79	$477.9K	-3.0%	Open the original filing on SEC.gov

SSELL◷$525K

Kissner Charles · DirectorSep 22

5,000 sh @ $105.00 · -36.4% own

SSELL◷$504.6K

Kissner Charles · DirectorAug 7

5,000 sh @ $100.92 · -26.7% own

SSELL$850.8K

Sayiner Necip · DirectorJun 3

5,000 sh @ $170.15 · -21.5% own

SSELL$790K

Higashi Emiko · DirectorJun 2

5,000 sh @ $158.00 · -9.2% own

SSELL$815K

Higashi Emiko · DirectorJun 2

5,000 sh @ $163.00 · -8.4% own

SSELL$730K

Stang Eric B · DirectorJun 1

5,000 sh @ $146.00 · -20.6% own

SSELL$15.2K

Fan Xianzhi Sean · EVP, COOMay 26

100 sh @ $152.35 · <0.1% own

SSELL$5.7M

Fan Xianzhi Sean · EVP, COOMay 26

37,814 sh @ $151.69 · -18.3% own

SSELL$787.9K

Higashi Emiko · DirectorMay 26

5,000 sh @ $157.57 · -7.8% own

SSELL$143.6K

Shinn John · SVP, General…May 22

1,000 sh @ $143.63 · -4.5% own

SSELL$1.3M

Sayiner Necip · DirectorMay 8

9,824 sh @ $130.18 · -29.7% own

SSELL$188.3K

Laub Steven · DirectorMay 7

1,500 sh @ $125.52 · -16.6% own

AGRANT—

Gagneja Sumeet · SVP, CFOMay 1

26,802 sh · +184.6% own

AGRANT—

Gagneja Sumeet · SVP, CFOMay 1

14,518 sh

SSELL◷$446.7K

Rao Meera · DirectorApr 24

2,972 sh @ $150.30 · -13.0% own

SSELL◷$1M

Rao Meera · DirectorApr 14

8,538 sh @ $118.08 · -27.1% own

FTAX$104.3K

Allen John K · Chief Accounting…Apr 3

1,131 sh @ $92.22 · -6.2% own

SSELL◷$14.6K

Seraphin Luc · President and CEOApr 2

165 sh @ $88.35 · <0.1% own

SSELL◷$239.6K

Seraphin Luc · President and CEOApr 2

2,750 sh @ $87.11 · -0.8% own

SSELL◷$216K

Seraphin Luc · President and CEOApr 2

2,511 sh @ $86.04 · -0.7% own

AGRANT—

Rao Meera · DirectorApr 1

2,223 sh · +7.6% own

AGRANT—

Sayiner Necip · DirectorApr 1

2,223 sh · +7.2% own

AGRANT—

Stang Eric B · DirectorApr 1

2,223 sh

FTAX$172.1K

Shinn John · SVP, General…Apr 1

1,913 sh @ $89.95 · -8.0% own

AGRANT—

Shinn John · SVP, General…Apr 1

5,558 sh · +30.1% own

FTAX◷$1.1M

Seraphin Luc · President and CEOApr 1

12,561 sh @ $89.95 · -3.5% own

AGRANT◷—

Seraphin Luc · President and CEOApr 1

32,684 sh · +9.9% own

AGRANT—

Peng Victor · DirectorApr 1

2,223 sh · +1,323% own

AGRANT—

Laub Steven · DirectorApr 1

2,223 sh · +32.7% own

AGRANT—

Kissner Charles · DirectorApr 1

2,223 sh · +5.8% own

AGRANT—

Higashi Emiko · DirectorApr 1

2,223 sh · +3.6% own

FTAX$891.9K

Fan Xianzhi Sean · EVP, COOApr 1

9,916 sh @ $89.95 · -4.6% own

AGRANT—

Fan Xianzhi Sean · EVP, COOApr 1

22,234 sh · +11.5% own

FTAX$59.2K

Allen John K · Chief Accounting…Apr 1

658 sh @ $89.95 · -3.5% own

FTAX$44.5K

Allen John K · Chief Accounting…Apr 1

495 sh @ $89.95 · -2.5% own

AGRANT—

Allen John K · Chief Accounting…Apr 1

2,779 sh · +16.7% own

SSELL◷$17.9K

Shinn John · SVP, General…Mar 10

200 sh @ $89.55 · -1.1% own

SSELL◷$386.1K

Shinn John · SVP, General…Mar 10

4,356 sh @ $88.64 · -18.9% own

SSELL◷$66.4K

Shinn John · SVP, General…Mar 3

700 sh @ $94.89 · -2.9% own

SSELL◷$150.8K

Shinn John · SVP, General…Mar 3

1,603 sh @ $94.07 · -6.3% own

SSELL◷$209.1K

Shinn John · SVP, General…Mar 3

2,254 sh @ $92.77 · -8.2% own

SSELL◷$132.1K

Seraphin Luc · President and CEOMar 2

1,300 sh @ $101.65 · -0.4% own

SSELL◷$660K

Seraphin Luc · President and CEOMar 2

6,587 sh @ $100.20 · -1.9% own

SSELL◷$939K

Seraphin Luc · President and CEOMar 2

9,469 sh @ $99.17 · -2.7% own

SSELL◷$1.3M

Seraphin Luc · President and CEOMar 2

13,654 sh @ $98.22 · -3.8% own

SSELL◷$703.6K

Seraphin Luc · President and CEOMar 2

7,225 sh @ $97.38 · -2.0% own

SSELL◷$160.9K

Seraphin Luc · President and CEOMar 2

1,679 sh @ $95.83 · -0.4% own

AGRANT—

Peng Victor · DirectorMar 2

168 sh

SSELL◷$433.8K

Lynch Desmond · SVP, CFOFeb 23

4,273 sh @ $101.53 · -6.3% own

FTAX$1.1M

Shinn John · SVP, General…Feb 1

9,884 sh @ $113.71 · -26.4% own

AGRANT—

Shinn John · SVP, General…Feb 1

17,276 sh · +85.6% own

FTAX$10.5M

Seraphin Luc · President and CEOFeb 1

92,523 sh @ $113.71 · -20.0% own

AGRANT—

Seraphin Luc · President and CEOFeb 1

143,744 sh · +45.0% own

FTAX$2.5M

Lynch Desmond · SVP, CFOFeb 1

22,105 sh @ $113.71 · -24.6% own

AGRANT—

Lynch Desmond · SVP, CFOFeb 1

34,554 sh · +62.3% own

FTAX$10.5M

Fan Xianzhi Sean · EVP, COOFeb 1

92,403 sh @ $113.71 · -32.3% own

AGRANT—

Fan Xianzhi Sean · EVP, COOFeb 1

148,802 sh · +108.2% own

GGIFT—

Fan Xianzhi Sean · EVP, COONov 21, 2025

300 sh · -0.2% own

GGIFT—

Fan Xianzhi Sean · EVP, COONov 19, 2025

300 sh · -0.2% own

SSELL$447.1K

Stang Eric B · DirectorNov 10, 2025

4,000 sh @ $111.79 · -16.4% own

SSELL$511.8K

Stang Eric B · DirectorNov 7, 2025

5,000 sh @ $102.35 · -17.0% own

SSELL◷$367.9K

Lynch Desmond · SVP, CFOOct 6, 2025

3,607 sh @ $101.99 · -6.1% own

SSELL◷$553.1K

Lynch Desmond · SVP, CFOOct 6, 2025

5,467 sh @ $101.17 · -8.5% own

SSELL◷$66.6K

Rao Meera · DirectorOct 1, 2025

653 sh @ $101.99 · -2.2% own

SSELL◷$832.1K

Lynch Desmond · SVP, CFOSep 15, 2025

9,074 sh @ $91.70 · -12.3% own

SSELL$642.2K

Sayiner Necip · DirectorSep 11, 2025

7,500 sh @ $85.63 · -19.6% own

SSELL◷$215.2K

Rao Meera · DirectorSep 2, 2025

3,000 sh @ $71.72 · -9.1% own

FTAX$200.2K

Lynch Desmond · SVP, CFOSep 1, 2025

2,725 sh @ $73.49 · -3.6% own

SSELL$178K

Laub Steven · DirectorAug 29, 2025

2,261 sh @ $78.72 · -25.0% own

SSELL$83.6K

Higashi Emiko · DirectorAug 13, 2025

1,075 sh @ $77.75 · -1.7% own

SSELL$551.4K

Sayiner Necip · DirectorAug 8, 2025

7,500 sh @ $73.53 · -16.4% own

SSELL$58.9K

Shinn John · SVP, General…Aug 4, 2025

790 sh @ $74.61 · -3.8% own

SSELL$83.3K

Higashi Emiko · DirectorAug 4, 2025

1,111 sh @ $75.00 · -1.7% own

SSELL$101.8K

Laub Steven · DirectorMay 27, 2025

1,847 sh @ $55.13 · -16.9% own

SSELL$203K

Laub Steven · DirectorMay 19, 2025

3,653 sh @ $55.56 · -25.1% own

SSELL$186.8K

Stang Eric B · DirectorMay 9, 2025

3,653 sh @ $51.13 · -11.1% own

SSELL◷$156.9K

Lynch Desmond · SVP, CFOMay 5, 2025

3,118 sh @ $50.31 · -4.0% own

SSELL◷$298.2K

Seraphin Luc · President and CEOApr 23, 2025

6,348 sh @ $46.97 · -1.9% own

SSELL◷$56.5K

Seraphin Luc · President and CEOApr 22, 2025

1,255 sh @ $45.00 · -0.4% own

SSELL◷$477.9K

Seraphin Luc · President and CEOApr 15, 2025

10,000 sh @ $47.79 · -3.0% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 50 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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