Xianzhi Sean Fan

CIK: 0001583840

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (23.1%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (30.8%)

Compensation grants

Other (G, F, J, C, D, …)6 (46.2%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

RMBS

RAMBUS INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (13 total)

RMBS
RAMBUS INC
May 26, 2026
Sale(S)
Direct
100 shares at avg. $152.35$15K
RMBS
RAMBUS INC
May 26, 2026
Sale(S)
Direct
37.8K shares at avg. $151.69$5.7M
RMBS
RAMBUS INC
Apr 1, 2026
Tax Payment(F)
Direct
9.9K shares at avg. $89.95$892K
RMBS
RAMBUS INC
Apr 1, 2026
Award(A)
Direct
22.2K shares-
RMBS
RAMBUS INC
Feb 1, 2026
Award(A)
Direct
148.8K shares-
RMBS
RAMBUS INC
Feb 1, 2026
Tax Payment(F)
Direct
92.4K shares at avg. $113.71$10.5M
RMBS
RAMBUS INC
Nov 21, 2025
Gift(G)
Direct
300 shares-
RMBS
RAMBUS INC
Nov 19, 2025
Gift(G)
Direct
300 shares-
RMBS
RAMBUS INC
Apr 1, 2025
Tax Payment(F)
Direct
3.5K shares at avg. $52.29$183K
RMBS
RAMBUS INC
Apr 1, 2025
Award(A)
Direct
47.8K shares-
RMBS
RAMBUS INC
Feb 19, 2025
Sale(S)
Direct
52.3K shares at avg. $68.02$3.6M
RMBS
RAMBUS INC
Feb 1, 2025
Tax Payment(F)
Direct
78.1K shares at avg. $60.35$4.7M
RMBS
RAMBUS INC
Feb 1, 2025
Award(A)
Direct
112.7K shares-

		Type	Shares	Price		Ownership
May 26, 2026	RMBS RAMBUS INC	Sale(S)	100	$152.35	$15,235	Direct
May 26, 2026	RMBS RAMBUS INC	Sale(S)	37,814	$151.69	$5,735,991	Direct
Apr 1, 2026	RMBS RAMBUS INC	Tax Payment(F)	9,916	$89.95	$891,944	Direct
Apr 1, 2026	RMBS RAMBUS INC	Award(A)	22,234	-	$0	Direct
Feb 1, 2026	RMBS RAMBUS INC	Award(A)	148,802	-	$0	Direct
Feb 1, 2026	RMBS RAMBUS INC	Tax Payment(F)	92,403	$113.71	$10,507,145	Direct
Nov 21, 2025	RMBS RAMBUS INC	Gift(G)	300	-	-	Direct
Nov 19, 2025	RMBS RAMBUS INC	Gift(G)	300	-	-	Direct
Apr 1, 2025	RMBS RAMBUS INC	Tax Payment(F)	3,496	$52.29	$182,806	Direct
Apr 1, 2025	RMBS RAMBUS INC	Award(A)	47,810	-	-	Direct
Feb 19, 2025	RMBS RAMBUS INC	Sale(S)	52,327	$68.02	$3,559,037	Direct
Feb 1, 2025	RMBS RAMBUS INC	Tax Payment(F)	78,078	$60.35	$4,712,007	Direct
Feb 1, 2025	RMBS RAMBUS INC	Award(A)	112,675	-	-	Direct

1-13 of 13 transactions

About FAN XIANZHI SEAN

FAN XIANZHI SEAN (SEC CIK 0001583840) files insider reports with the SEC as EVP, COO of RAMBUS INC (RMBS).

Signal8 holds 8 ownership filings by FAN XIANZHI SEAN, all Form 4s, filed between Feb 4, 2025 and May 26, 2026. Those filings report 13 transactions, from Feb 1, 2025 to May 26, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on FAN XIANZHI SEAN's filings is in SAN JOSE, CA.

Recent filings by FAN XIANZHI SEAN

May 26, 2026: Open-market sales of RMBS shares (2 lines, Form 4, code S).
Apr 1, 2026: Tax withholding of RMBS shares (Form 4, code F).
Apr 1, 2026: Grant or award of RMBS shares (Form 4, code A).
Feb 1, 2026: Grant or award of RMBS shares (Form 4, code A).
Feb 1, 2026: Tax withholding of RMBS shares (Form 4, code F).

Other insiders filing for RAMBUS INC (RMBS)

KISSNER CHARLES, Director
Taulbee William Clarence II, Chief Accounting Officer
Sayiner Necip, Director
Higashi Emiko, Director
STANG ERIC B, Director
Shinn John, SVP, General Counsel

How to read Form 4 transaction codes