GELTZEILER MICHAEL S

SVP and CFO at READERS DIGEST ASSOCIATION INC · on record since Jun 23, 2006
Director at HYPERION DEFI, INC. · on record since Nov 16, 2023
Director at Voyager Learning CO · on record since Jul 5, 2006
Group EVP & CFO at NYSE Euronext · on record since Feb 11, 2009
SVP/Chief Financial Officer at ADT Corp · on record since May 23, 2014

Insider trading activity of GELTZEILER MICHAEL S

Transactions on record: 111; since Jul 2, 2004

Open-market buys: 6; $386.2K

Open-market sells: 0

Companies traded: 5; last filing Jul 1, 2026

Figures computed from official regulatory filings — .

Companies where GELTZEILER MICHAEL S has traded

HYPERION DEFI, INC.10 tx · $90.3K · Jul 1, 2026
ADT Corp28 tx · $396.6K · May 4, 2016
NYSE Euronext49 tx · $2.9M · Nov 13, 2013
READERS DIGEST ASSOCIATION INC22 tx · $2.4M · Mar 6, 2007
Voyager Learning CO2 tx · Jul 5, 2006

Track record of GELTZEILER MICHAEL S

Open-market buys: 6

Last buy: Dec 17, 2025

Enough buys on record, but none of them has a 63-day return yet — this happens when the shares stopped trading, or when the buys are too recent. Win rates will appear once returns mature.

Transaction history of GELTZEILER MICHAEL S

Co-insiders of GELTZEILER MICHAEL S

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
HYPERION DEFI, INC.Listing unverified	Jul 1, 2026	Award	58,917	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Dec 19, 2025	Buy	30,000	3.01 USD	$90.3K	conv 53First in 12mo	SEC
HYPERION DEFI, INC.Listing unverified	Aug 20, 2025	Award	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Jul 9, 2025	Award	7,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Apr 29, 2025	Award	5,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Apr 23, 2025	Award	5,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Jun 14, 2024	AwardD (derivative)	85,106	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Jun 14, 2024	Award	61,481	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Nov 16, 2023	Award	19,814	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Nov 16, 2023	AwardD (derivative)	28,799	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	May 4, 2016	OtherD (derivative)	-59,700	—	n/a (No price was disclosed in the filing)		SEC
ADT CorpListing unverified	May 4, 2016	Other	-59,457	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	May 4, 2016	OtherD (derivative)	-63,700	—	n/a (No price was disclosed in the filing)		SEC
ADT CorpListing unverified	Feb 19, 2016	Award	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 24, 2015	Other	-1,166	34.28 USD	$40K		SEC
ADT CorpListing unverified	Nov 20, 2015	Award	209	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 17, 2015	AwardD (derivative)	63,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 17, 2015	Other	-996	33.81 USD	$33.7K		SEC
ADT CorpListing unverified	Nov 17, 2015	Award	14,600	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Aug 21, 2015	Award	221	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	May 22, 2015	Award	192	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Feb 20, 2015	Award	182	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 25, 2014	Other	-743	36.32 USD	$27K		SEC
ADT CorpListing unverified	Nov 21, 2014	Award	126	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 18, 2014	AwardD (derivative)	59,700	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
HYPERION DEFI, INC.Listing unverified	Jul 1, 2026	Award	58,917	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Dec 19, 2025	Buy	30,000	3.01 USD	$90.3K	conv 53First in 12mo	SEC
HYPERION DEFI, INC.Listing unverified	Aug 20, 2025	Award	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Jul 9, 2025	Award	7,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Apr 29, 2025	Award	5,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Apr 23, 2025	Award	5,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Jun 14, 2024	AwardD (derivative)	85,106	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Jun 14, 2024	Award	61,481	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Nov 16, 2023	Award	19,814	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HYPERION DEFI, INC.Listing unverified	Nov 16, 2023	AwardD (derivative)	28,799	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	May 4, 2016	OtherD (derivative)	-59,700	—	n/a (No price was disclosed in the filing)		SEC
ADT CorpListing unverified	May 4, 2016	Other	-59,457	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	May 4, 2016	OtherD (derivative)	-63,700	—	n/a (No price was disclosed in the filing)		SEC
ADT CorpListing unverified	Feb 19, 2016	Award	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 24, 2015	Other	-1,166	34.28 USD	$40K		SEC
ADT CorpListing unverified	Nov 20, 2015	Award	209	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 17, 2015	AwardD (derivative)	63,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 17, 2015	Other	-996	33.81 USD	$33.7K		SEC
ADT CorpListing unverified	Nov 17, 2015	Award	14,600	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Aug 21, 2015	Award	221	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	May 22, 2015	Award	192	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Feb 20, 2015	Award	182	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 25, 2014	Other	-743	36.32 USD	$27K		SEC
ADT CorpListing unverified	Nov 21, 2014	Award	126	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADT CorpListing unverified	Nov 18, 2014	AwardD (derivative)	59,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC