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XIANZHI SEAN FAN

CIK 1583840 · EVP, COO · last filed 2026-05-26

XIANZHI SEAN FAN is an EVP, COO who has filed 60 SEC Form 4 insider transactions across 2 companies since 2014. The most recent filing, for RMBS, was dated May 26, 2026. Across all open-market trades the lifetime net is −$29.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $14.4M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$14.40M

Companies

2

Total Filings

60

Lifetime Open-Market Net

-$29.52M

Filer Profile

Reported Address
4453 NORTH FIRST STREET,
SUITE 100
SAN JOSE, CA 95134
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
RMBS EVP, COO 168,458 $85.46 $14.40M -$20.67M 29 2026-05-26
INTEGRATED DEVICE TECHNOLOGY INC (IDTI) Delisted Sr Vice President&Corporate GM 0 — — -$8.85M 22 2019-03-29

Recent Filings

60 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-05-26 RMBS Notice (144) −37,914 -$5.75M EDGAR
2026-05-26 RMBS Sell (S) −37,914 -$5.75M EDGAR
2026-04-03 RMBS Mixed +12,318 -$891.9K EDGAR
2026-02-03 RMBS Mixed +56,399 -$10.51M EDGAR
2025-11-21 RMBS Gift (G) −300 $0 EDGAR
2025-11-20 RMBS Gift (G) −300 $0 EDGAR
2025-04-03 RMBS Mixed +44,314 -$182.8K EDGAR
2025-02-19 RMBS Notice (144) −52,327 -$3.56M EDGAR
2025-02-19 RMBS Sell (S) −52,327 -$3.56M EDGAR
2025-02-04 RMBS Mixed +34,597 -$4.71M EDGAR
Showing 1–10 of 60
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.