Gad Thomas - Insider Non-Derivative Transactions at Y-mAbs Therapeutics, Inc. (YMAB) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Sep 16, 2025, Gad Thomas's relationship to Y-mAbs Therapeutics, Inc. (YMAB) is Director,Officer (CHIEF BUSINESS OFFICER), and currently has 0 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other YMAB insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Gad Thomas - Insider Non-Derivative Transactions of YMAB Common Stock

Gad Thomas - Insider Non-Derivative Transactions at YMAB

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Sep 17, 2025	U -- (Common Stock)	60000	8.6	0
Sep 17, 2025	Disposition -- (Common Stock)	60235	0	0
Sep 17, 2025	U -- (Common Stock)	245486	8.6	0
Sep 17, 2025	U -- (Common Stock)	67681	8.6	0
Jun 4, 2025	M -- (Common Stock)	103000	2	305721
Mar 8, 2025	Sell -- (Common Stock)	10810	5.23	202721
Jan 18, 2025	Acquisition -- (Common Stock)	32000	0	213531
Sep 20, 2024	M -- (Common Stock)	22831	4.38	181531
Sep 17, 2024	Sell -- (Common Stock)	30000	12.97	67681
Sep 14, 2024	Sell -- (Common Stock)	65000	13.47	97681
Jun 12, 2024	Sell -- (Common Stock)	35000	12	162681
Jun 11, 2024	Sell -- (Common Stock)	35000	12.03	197681
May 24, 2024	Sell -- (Common Stock)	7351	13	232681
May 22, 2024	Sell -- (Common Stock)	25000	12	240032
Mar 6, 2024	Sell -- (Common Stock)	3900	16.44	158700
Jan 19, 2024	Acquisition -- (Common Stock)	22100	0	162600
Dec 22, 2023	M -- (Common Stock)	50000	2	140500
Dec 16, 2023	Sell -- (Common Stock)	50000	6.61	265032
Dec 15, 2023	Sell -- (Common Stock)	50000	6.83	315032
Dec 14, 2023	Sell -- (Common Stock)	50000	6.58	365032
Nov 22, 2023	Sell -- (Common Stock)	75000	5.31	415032
Nov 21, 2023	Sell -- (Common Stock)	75000	5.3	490032
Jan 18, 2023	Acquisition -- (Common Stock)	40500	0	90500