Home

Robby Sai Kit Chang

CIK 1732700 · Chief Financial Officer · last filed 2026-08-25

Robby Sai Kit Chang is a Chief Financial Officer who has filed 28 SEC Form 4 insider transactions across 3 companies since 2018. The most recent filing, for URG, was dated Aug 25, 2026. Across all open-market trades the lifetime net is −$1.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.7M 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.

Loading insider history…
Disclosed Exposure

$1.70M

Companies

3

Total Filings

28

Lifetime Open-Market Net

-$1.16M

Filer Profile

Reported Address
1807-18 HARBOUR STREET
SUITE 200
TORONTO, CO M5J 2Z6
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
URG Director 96,449 $1.40 $135.0K -$1.16M 26 2026-08-25
American Bitcoin Corp. (GRYP) Delisted Director 714,746 $6.90 $4.93M $0 1 2024-11-04
RIOT Chief Financial Officer 72,000 $21.80 $1.57M $0 1 2018-09-24

Recent Filings

28 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
2026-08-25 URG Mixed +12,270 -$15.1K EDGAR
2025-12-29 URG Grant (A) — $0 EDGAR
2025-12-29 URG Mixed — $0 EDGAR
2025-09-26 URG Mixed — -$277.8K EDGAR
2025-01-21 URG Exer (M) +10,607 $11.8K EDGAR
2024-12-16 URG Grant (A) — $0 EDGAR
2024-11-04 American Bitcoin Corp. (GRYP) Delisted Grant (A) +264,080 $0 EDGAR
2024-06-25 URG Mixed — -$59.3K EDGAR
2024-06-24 URG Mixed — -$51.3K EDGAR
2024-06-21 URG Mixed — -$54.0K EDGAR
Showing 1–10 of 28
Page 1 of 3
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.