GREY MICHAEL G

Director at SGX PHARMACEUTICALS, INC. · on record since Jan 31, 2006
President & CEO at SGX PHARMACEUTICALS, INC. · on record since Mar 9, 2006
Director at IDM PHARMA, INC. · on record since Jun 16, 2006
Director at ACHILLION PHARMACEUTICALS INC · on record since Dec 26, 2006
Director at BIOMARIN PHARMACEUTICAL INC · on record since Dec 18, 2006
Director at Horizon Therapeutics Public Ltd Co · on record since Oct 3, 2011
Director at SPRUCE BIOSCIENCES, INC. · on record since May 26, 2026
Executive Chairman at SPRUCE BIOSCIENCES, INC. · on record since May 26, 2026
Director at OnKure Therapeutics, Inc. · on record since Jun 8, 2026
Executive Chairman at OnKure Therapeutics, Inc. · on record since Apr 15, 2021
Director at Mirati Therapeutics, Inc. · on record since Nov 6, 2014
Director at Mirum Pharmaceuticals, Inc. · on record since Jul 24, 2019
Executive Chairman at Mirum Pharmaceuticals, Inc. · on record since Jul 24, 2019

Insider trading activity of GREY MICHAEL G

Transactions on record: 298; since Jun 15, 2004

Open-market buys: 1; $94.8K

Open-market sells: 72; $24.8M

Companies traded: 9; last filing Aug 11, 2026

Figures computed from official regulatory filings — .

Companies where GREY MICHAEL G has traded

OnKure Therapeutics, Inc.12 tx · $98.5K · Aug 11, 2026
Mirum Pharmaceuticals, Inc.35 tx · $13M · Jun 17, 2026
SPRUCE BIOSCIENCES, INC.19 tx · May 26, 2026
76 tx · $15.2M · Oct 6, 2023
94 tx · $9.7M · Mar 9, 2021
34 tx · $4.1M · Jan 20, 2021
5 tx · Dec 22, 2009
8 tx · Dec 12, 2008
15 tx · $827.7K · Aug 21, 2008

Track record of GREY MICHAEL G

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

Transaction history of GREY MICHAEL G

Co-insiders of GREY MICHAEL G

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
OnKure Therapeutics, Inc.Listing on record	Aug 11, 2026	AwardD (derivative)	22,350	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Jun 17, 2026	AwardD (derivative)	3,772	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Jun 17, 2026	AwardD (derivative)	1,980	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
OnKure Therapeutics, Inc.Listing on record	Jun 8, 2026	AwardD (derivative)	7,650	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	May 26, 2026	AwardD (derivative)	1,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 23, 2025	Exercise	50,000	2.94 USD	$147K		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 23, 2025	ExerciseD (derivative)	-50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 23, 2025	Sell	-50,000	78.00 USD	$3.9M	Unusual size	SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	387	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-666	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-1,499	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	400	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	133	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-133	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	1,255	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	1,499	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-387	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-400	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	666	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-1,255	—	n/a (No price was disclosed in the filing)		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 2, 2025	ExerciseD (derivative)	-50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 2, 2025	Exercise	50,000	2.94 USD	$147K		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 2, 2025	Sell	-50,000	74.00 USD	$3.7M	Unusual size	SEC
Mirum Pharmaceuticals, Inc.Listing on record	Nov 25, 2025	Sell	-50,000	70.00 USD	$3.5M	Unusual size	SEC
Mirum Pharmaceuticals, Inc.Listing on record	Nov 25, 2025	Exercise	50,000	2.94 USD	$147K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
OnKure Therapeutics, Inc.Listing on record	Aug 11, 2026	AwardD (derivative)	22,350	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Jun 17, 2026	AwardD (derivative)	3,772	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Jun 17, 2026	AwardD (derivative)	1,980	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
OnKure Therapeutics, Inc.Listing on record	Jun 8, 2026	AwardD (derivative)	7,650	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	May 26, 2026	AwardD (derivative)	1,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 23, 2025	Exercise	50,000	2.94 USD	$147K		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 23, 2025	ExerciseD (derivative)	-50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 23, 2025	Sell	-50,000	78.00 USD	$3.9M	Unusual size	SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	387	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-666	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-1,499	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	400	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	133	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-133	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	1,255	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	1,499	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-387	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-400	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	AwardD (derivative)	666	—	n/a (No price was disclosed in the filing)		SEC
SPRUCE BIOSCIENCES, INC.Listing on record	Dec 15, 2025	OtherD (derivative)	-1,255	—	n/a (No price was disclosed in the filing)		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 2, 2025	ExerciseD (derivative)	-50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 2, 2025	Exercise	50,000	2.94 USD	$147K		SEC
Mirum Pharmaceuticals, Inc.Listing on record	Dec 2, 2025	Sell	-50,000	74.00 USD	$3.7M	Unusual size	SEC
Mirum Pharmaceuticals, Inc.Listing on record	Nov 25, 2025	Sell	-50,000	70.00 USD	$3.5M	Unusual size	SEC
Mirum Pharmaceuticals, Inc.Listing on record	Nov 25, 2025	Exercise	50,000	2.94 USD	$147K		SEC