Wilms Joris

SVP & CHIEF OPERATING OFFICER at Y-mAbs Therapeutics, Inc. · on record since Sep 20, 2018

Insider trading activity of Wilms Joris

Transactions on record: 26; since Dec 13, 2018

Open-market buys: 0

Open-market sells: 1; $73.5K

Companies traded: 1; last filing Sep 18, 2025

Figures computed from official regulatory filings — methodology.

Companies where Wilms Joris has traded

Y-mAbs Therapeutics, Inc.26 tx · $183.5K · Sep 18, 2025

Track record of Wilms Joris

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

Transaction history of Wilms Joris

Co-insiders of Wilms Joris

Ahmed MahiuddinY-mAbs Therapeutics, Inc.
Ber GerardY-mAbs Therapeutics, Inc.
Buschle MichaelY-mAbs Therapeutics, Inc.
Gad ThomasY-mAbs Therapeutics, Inc.
Gentilcore Douglas JY-mAbs Therapeutics, Inc.
GILL DAVID NY-mAbs Therapeutics, Inc.
Hamill LauraY-mAbs Therapeutics, Inc.

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Company	Filed	Type	Qty	Price	Value · USD	Src
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-32,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-35,700	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	Other	-12,799	8.60 USD	$110.1K	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	Other	-39,301	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-32,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-35,700	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-42,900	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2025	AwardD	42,900	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2025	Award	21,500	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Aug 27, 2024	Sell	-5,000	14.69 USD	$73.5K	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2024	Award	17,800	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2024	AwardD	35,700	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 30, 2023	AwardD	32,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 19, 2023	Award	17,800	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 19, 2023	AwardD	35,700	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Apr 28, 2022	AwardD	20,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Dec 16, 2021	AwardD	32,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Dec 16, 2020	AwardD	20,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Dec 11, 2019	AwardD	20,000	0.00 USD	$0	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-32,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-35,700	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	Other	-12,799	8.60 USD	$110.1K	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	Other	-39,301	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-32,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-35,700	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-42,900	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Sep 18, 2025	OtherD	-20,000	—	—	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2025	AwardD	42,900	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2025	Award	21,500	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Aug 27, 2024	Sell	-5,000	14.69 USD	$73.5K	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2024	Award	17,800	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 22, 2024	AwardD	35,700	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 30, 2023	AwardD	32,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 19, 2023	Award	17,800	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Jan 19, 2023	AwardD	35,700	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Apr 28, 2022	AwardD	20,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Dec 16, 2021	AwardD	32,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Dec 16, 2020	AwardD	20,000	0.00 USD	$0	SEC
Y-mAbs Therapeutics, Inc.	Dec 11, 2019	AwardD	20,000	0.00 USD	$0	SEC