Chang Robby Sai Kit

Director at American Bitcoin Corp. · on record since Feb 16, 2024
Chief Executive Officer at American Bitcoin Corp. · on record since Feb 16, 2024
Chief Financial Officer at Riot Platforms, Inc. · on record since Mar 7, 2018
Director at UR-ENERGY INC · on record since Apr 3, 2018

Insider trading activity of Chang Robby Sai Kit

Transactions on record: 64; since Apr 3, 2018

Open-market buys: 0

Open-market sells: 9; $1.2M

Companies traded: 3; last filing Aug 25, 2026

Figures computed from official regulatory filings — .

Companies where Chang Robby Sai Kit has traded

UR-ENERGY INC61 tx · $1.8M · Aug 25, 2026
American Bitcoin Corp.1 tx · Nov 4, 2024
Riot Platforms, Inc.2 tx · Sep 24, 2018

Track record of Chang Robby Sai Kit

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Chang Robby Sai Kit

Co-insiders of Chang Robby Sai Kit

1837 Partners L.P.Riot Platforms, Inc.
1837 Partners Ltd.Riot Platforms, Inc.
1837 Partners QP L.P.Riot Platforms, Inc.
1837 RMB Managers L.L.C.Riot Platforms, Inc.
AMERICAN BITCOIN HOLDINGS LLCAmerican Bitcoin Corp.
Amy A. Poinsett Revocable Living TrustAmerican Bitcoin Corp.
Anchorage Lending CA, LLCAmerican Bitcoin Corp.
Anchor Labs, Inc.American Bitcoin Corp.
Beeghley Michael MartinRiot Platforms, Inc.
Bennett Gregory LRiot Platforms, Inc.
Billingsley JessicaAmerican Bitcoin Corp.
BOBERG W. WILLIAMUR-ENERGY INC
BONNER JAMES AUR-ENERGY INC
Brooks Megan M.Riot Platforms, Inc.
Broukhim MichaelAmerican Bitcoin Corp.

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
UR-ENERGY INCListing on record	Aug 25, 2026	Exercise	87,858	1.04 USD	$91.4K	Unusual size	SEC
UR-ENERGY INCListing on record	Aug 25, 2026	Sell	-75,588	1.41 USD	$106.5K		SEC
UR-ENERGY INCListing on record	Aug 25, 2026	ExerciseD (derivative)	-87,858	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	AwardD (derivative)	22,902	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	AwardD (derivative)	91,602	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	Other	-16,407	1.45 USD	$23.8K		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	Exercise	16,407	1.45 USD	$23.8K		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	ExerciseD (derivative)	-16,407	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Sep 26, 2025	Exercise	213,914	0.45 USD	$96.3K	Unusual size	SEC
UR-ENERGY INCListing on record	Sep 26, 2025	Sell	-213,914	1.75 USD	$374.3K	Unusual size	SEC
UR-ENERGY INCListing on record	Sep 26, 2025	ExerciseD (derivative)	-213,914	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jan 21, 2025	Exercise	10,607	1.12 USD	$11.9K		SEC
UR-ENERGY INCListing on record	Jan 21, 2025	ExerciseD (derivative)	-22,826	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 16, 2024	AwardD (derivative)	91,602	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 16, 2024	AwardD (derivative)	22,902	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
American Bitcoin Corp.Listing unverified	Nov 4, 2024	Award	264,080	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jun 25, 2024	Exercise	73,474	0.58 USD	$42.6K		SEC
UR-ENERGY INCListing on record	Jun 25, 2024	Sell	-73,474	1.38 USD	$101.4K		SEC
UR-ENERGY INCListing on record	Jun 25, 2024	ExerciseD (derivative)	-73,474	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jun 24, 2024	ExerciseD (derivative)	-60,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jun 24, 2024	Exercise	60,000	0.58 USD	$34.8K		SEC
UR-ENERGY INCListing on record	Jun 24, 2024	Sell	-60,000	1.43 USD	$85.8K		SEC
UR-ENERGY INCListing on record	Jun 21, 2024	Exercise	60,100	0.58 USD	$34.9K		SEC
UR-ENERGY INCListing on record	Jun 21, 2024	Sell	-60,100	1.47 USD	$88.3K		SEC
UR-ENERGY INCListing on record	Jun 21, 2024	ExerciseD (derivative)	-60,100	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
UR-ENERGY INCListing on record	Aug 25, 2026	Exercise	87,858	1.04 USD	$91.4K	Unusual size	SEC
UR-ENERGY INCListing on record	Aug 25, 2026	Sell	-75,588	1.41 USD	$106.5K		SEC
UR-ENERGY INCListing on record	Aug 25, 2026	ExerciseD (derivative)	-87,858	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	AwardD (derivative)	22,902	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	AwardD (derivative)	91,602	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	Other	-16,407	1.45 USD	$23.8K		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	Exercise	16,407	1.45 USD	$23.8K		SEC
UR-ENERGY INCListing on record	Dec 29, 2025	ExerciseD (derivative)	-16,407	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Sep 26, 2025	Exercise	213,914	0.45 USD	$96.3K	Unusual size	SEC
UR-ENERGY INCListing on record	Sep 26, 2025	Sell	-213,914	1.75 USD	$374.3K	Unusual size	SEC
UR-ENERGY INCListing on record	Sep 26, 2025	ExerciseD (derivative)	-213,914	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jan 21, 2025	Exercise	10,607	1.12 USD	$11.9K		SEC
UR-ENERGY INCListing on record	Jan 21, 2025	ExerciseD (derivative)	-22,826	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 16, 2024	AwardD (derivative)	91,602	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Dec 16, 2024	AwardD (derivative)	22,902	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
American Bitcoin Corp.Listing unverified	Nov 4, 2024	Award	264,080	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jun 25, 2024	Exercise	73,474	0.58 USD	$42.6K		SEC
UR-ENERGY INCListing on record	Jun 25, 2024	Sell	-73,474	1.38 USD	$101.4K		SEC
UR-ENERGY INCListing on record	Jun 25, 2024	ExerciseD (derivative)	-73,474	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jun 24, 2024	ExerciseD (derivative)	-60,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
UR-ENERGY INCListing on record	Jun 24, 2024	Exercise	60,000	0.58 USD	$34.8K		SEC
UR-ENERGY INCListing on record	Jun 24, 2024	Sell	-60,000	1.43 USD	$85.8K		SEC
UR-ENERGY INCListing on record	Jun 21, 2024	Exercise	60,100	0.58 USD	$34.9K		SEC
UR-ENERGY INCListing on record	Jun 21, 2024	Sell	-60,100	1.47 USD	$88.3K		SEC
UR-ENERGY INCListing on record	Jun 21, 2024	ExerciseD (derivative)	-60,100	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC