Y-mAbs Therapeutics, Inc. (YMAB)

Latest Insider Confidence Score

2025Q4

47.8
Bearish

Company insider confidence (by quarter)

2018Q3 2025Q4

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Moller-San Pedro Claus Juan CEO 230,000 Dec 16, 2021
Ahmed Mahiuddin Sr. VP and CSO 150,000 May 27, 2020
Rossi Michael J CEO 52,650 Sep 18, 2025
Lund-Hansen Torben SVP & CHIEF TECHNICAL OFFICER 45,662 Aug 30, 2024
Wilms Joris COO 42,900 Sep 18, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Sep 16, 2025 Sep 19, 2025 Hamill Laura Director Sell 42.5 -30,905 -100.00% ✗ $50.1K
Sep 16, 2025 Sep 18, 2025 WG Biotech ApS Director Sell 35.0 -4,559,233 -100.00% ✗ $39.2M
Sep 16, 2025 Sep 18, 2025 Gentilcore Douglas J SVP, Danyelza Bus. Unit Head Neutral 52.5 - 0.00% ✗ -
Sep 16, 2025 Sep 18, 2025 GILL DAVID N Director Sell 42.5 -30,905 -100.00% ✗ $50.1K
Sep 16, 2025 Sep 18, 2025 TYAGI ASHU Director Sell 42.5 -30,905 -100.00% ✗ $50.1K
Sep 16, 2025 Sep 18, 2025 Gad Thomas CHIEF BUSINESS OFFICER Sell 37.5 -433,402 -100.00% ✗ $3.2M
Sep 16, 2025 Sep 18, 2025 PFREUNDSCHUH PETER P. CFO Neutral 47.5 -77,800 -100.00% ✗ -
Sep 16, 2025 Sep 18, 2025 Rossi Michael J CEO Sell 42.5 -137,083 -100.00% ✗ $68.6K
Sep 16, 2025 Sep 18, 2025 Wilms Joris COO Sell 42.5 -52,100 -100.00% ✗ $110.1K
Sep 16, 2025 Sep 18, 2025 Wedell-Wedellsborg Johan Director Sell 35.0 -4,590,138 -100.00% ✗ $39.3M
Sep 16, 2025 Sep 18, 2025 LaRocca John SVP, General Counsel & Secry Neutral 47.5 -21,500 -100.00% ✗ -
Sep 16, 2025 Sep 18, 2025 HEALY JAMES Director Sell 35.0 -2,250,961 -100.00% ✗ $19.1M
Jun 30, 2025 Jul 2, 2025 Hamill Laura Director Neutral 90.0 +25,080 430.56% ✗ -
Jun 30, 2025 Jul 2, 2025 TYAGI ASHU Director Neutral 90.0 +25,080 430.56% ✗ -
Jun 30, 2025 Jul 2, 2025 Wedell-Wedellsborg Johan Director Neutral 67.5 +25,080 0.55% ✗ -
Jun 30, 2025 Jul 2, 2025 HEALY JAMES Director Neutral 77.5 +25,080 1.13% ✗ -
Jun 30, 2025 Jul 2, 2025 GILL DAVID N Director Neutral 90.0 +25,080 430.56% ✗ -
Jun 3, 2025 Jun 5, 2025 Gad Thomas CHIEF BUSINESS OFFICER Neutral 52.5 - 0.00% ✗ -
Mar 7, 2025 Mar 11, 2025 Rossi Michael J CEO Sell 26.3 -3,917 -2.78% ✗ $20.4K
Mar 7, 2025 Mar 11, 2025 Gad Thomas CHIEF BUSINESS OFFICER Sell 22.5 -10,810 -3.17% ✗ $56.5K
Jan 17, 2025 Jan 22, 2025 PFREUNDSCHUH PETER P. CFO Neutral 90.0 +31,800 69.13% ✗ -
Jan 17, 2025 Jan 22, 2025 Gad Thomas CHIEF BUSINESS OFFICER Neutral 90.0 +32,000 10.35% ✗ -
Jan 17, 2025 Jan 22, 2025 Gentilcore Douglas J SVP, Danyelza Bus. Unit Head Neutral 52.5 - 0.00% ✗ -
Jan 17, 2025 Jan 22, 2025 Wilms Joris COO Neutral 90.0 +21,500 70.26% ✗ -
Jan 17, 2025 Jan 22, 2025 Rossi Michael J CEO Neutral 90.0 +105,300 294.96% ✗ -
Jan 17, 2025 Jan 22, 2025 LaRocca John SVP, General Counsel & Secry Neutral 90.0 +21,500 100.00% ✗ -
Jan 17, 2025 Gentilcore Douglas J SVP, Danyelza Bus. Unit Head Neutral 52.5 - 0.00% ✗ -
Jan 16, 2025 LaRocca John SVP, General Counsel & Secry Neutral 52.5 - 0.00% ✗ -
Sep 19, 2024 Sep 20, 2024 Gad Thomas CHIEF BUSINESS OFFICER Neutral 52.5 - 0.00% ✗ -
Sep 13, 2024 Sep 17, 2024 Gad Thomas CHIEF BUSINESS OFFICER Sell 17.5 -95,000 -24.91% ✗ $1.3M
Aug 28, 2024 Aug 30, 2024 Lund-Hansen Torben SVP & CHIEF TECHNICAL OFFICER Sell 20.0 -50,000 -38.09% ✗ $768.5K
Aug 26, 2024 Aug 27, 2024 Wilms Joris COO Sell 22.5 -5,000 -14.04% ✗ $73.5K
Jul 12, 2024 Jul 12, 2024 PFREUNDSCHUH PETER P. CFO Neutral 90.0 +46,000 100.00% ✗ -
Jul 8, 2024 PFREUNDSCHUH PETER P. CFO Neutral 52.5 - 0.00% ✗ -
Jun 11, 2024 Jun 13, 2024 TAGLIAFERRI MARY Director Neutral 90.0 +3,495 75.00% ✗ -
Jun 11, 2024 Jun 13, 2024 Hamill Laura Director Neutral 90.0 +3,495 150.00% ✗ -
Jun 11, 2024 Jun 13, 2024 Wedell-Wedellsborg Johan Director Neutral 55.0 +3,495 0.08% ✗ -
Jun 11, 2024 Jun 13, 2024 HEALY JAMES Director Neutral 55.0 +3,495 0.16% ✗ -
Jun 11, 2024 Jun 13, 2024 GILL DAVID N Director Neutral 90.0 +3,495 150.00% ✗ -
Jun 11, 2024 Jun 13, 2024 TYAGI ASHU Director Neutral 90.0 +3,495 150.00% ✗ -
Jun 10, 2024 Jun 11, 2024 Ber Gerard Director Sell 27.5 -722 -30.99% ✗ $8.7K
Jun 10, 2024 Jun 11, 2024 Gad Thomas CHIEF BUSINESS OFFICER Sell 20.0 -70,000 -15.51% ✗ $841.1K
May 30, 2024 May 31, 2024 Kruse Bo CFO Sell 20.0 -60,000 -12.45% ✗ $723.1K
May 21, 2024 May 23, 2024 Gad Thomas CHIEF BUSINESS OFFICER Sell 20.0 -32,351 -6.69% ✗ $395.6K
Mar 12, 2024 Mar 14, 2024 TAGLIAFERRI MARY Director Neutral 90.0 +4,660 100.00% ✗ -
Mar 8, 2024 TAGLIAFERRI MARY Director Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 7, 2024 Rajah Vignesh SVP & CHIEF MEDICAL OFFICER Sell 26.3 -1,711 -4.29% ✗ $28.3K
Mar 5, 2024 Mar 7, 2024 Gad Thomas CHIEF BUSINESS OFFICER Sell 32.5 -3,900 -0.80% ✗ $64.1K
Mar 5, 2024 Mar 7, 2024 Smith Susan Laura SVP & CHIEF COMMERCIAL OFFICER Sell 26.3 -1,682 -4.72% ✗ $27.8K
Feb 12, 2024 Feb 14, 2024 Rossi Michael J CEO Neutral 90.0 +35,700 100.00% ✗ -
Jan 18, 2024 Jan 22, 2024 Rajah Vignesh SVP & CHIEF MEDICAL OFFICER Neutral 90.0 +17,800 80.67% ✗ -
Jan 18, 2024 Jan 22, 2024 Smith Susan Laura SVP & CHIEF COMMERCIAL OFFICER Neutral 90.0 +17,800 100.00% ✗ -
Jan 18, 2024 Jan 22, 2024 Lisby Steen SVP & CHIEF SCIENTIFIC OFFICER Neutral 90.0 +17,800 100.00% ✗ -
Jan 18, 2024 Jan 22, 2024 Wilms Joris COO Neutral 90.0 +17,800 100.00% ✗ -
Jan 18, 2024 Jan 22, 2024 Lund-Hansen Torben SVP & CHIEF TECHNICAL OFFICER Neutral 90.0 +17,800 28.05% ✗ -
Jan 18, 2024 Jan 22, 2024 Gad Thomas CHIEF BUSINESS OFFICER Neutral 82.5 +22,100 4.75% ✗ -
Jan 18, 2024 Jan 22, 2024 Kruse Bo CFO Neutral 85.0 +18,100 9.39% ✗ -
Dec 21, 2023 Dec 26, 2023 Gad Thomas Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Dec 13, 2023 Dec 15, 2023 Gad Thomas Chief Business Officer Sell 17.5 -150,000 -26.52% ✗ $1M
Dec 11, 2023 Dec 12, 2023 WG Biotech ApS Director Buy 56.3 +6,455 0.14% ✗ $44.2K
Dec 11, 2023 Dec 12, 2023 Wedell-Wedellsborg Johan Director Buy 56.3 +6,455 0.14% ✗ $44.2K
Dec 7, 2023 Dec 11, 2023 WG Biotech ApS Director Buy 85.0 +127,549 1.44% ✗ $890.4K
Dec 7, 2023 Dec 11, 2023 Wedell-Wedellsborg Johan Director Buy 90.0 +127,549 2.88% ✗ $890.4K
Nov 29, 2023 Dec 1, 2023 WG Biotech ApS Director Buy 85.0 +51,837 1.19% ✗ $309.5K
Nov 29, 2023 Dec 1, 2023 Wedell-Wedellsborg Johan Director Buy 85.0 +51,837 1.19% ✗ $309.5K
Nov 27, 2023 Nov 29, 2023 Wedell-Wedellsborg Johan Director Buy 85.0 +93,187 2.18% ✗ $521.3K
Nov 27, 2023 Nov 29, 2023 WG Biotech ApS Director Buy 85.0 +93,187 2.18% ✗ $521.3K
Nov 20, 2023 Nov 22, 2023 Gad Thomas Chief Business Officer Sell 20.0 -150,000 -20.96% ✗ $795.4K
Nov 6, 2023 Nov 8, 2023 Gad Thomas Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Nov 6, 2023 Nov 8, 2023 Rossi Michael J CEO Neutral 52.5 - 0.00% ✗ -
Nov 8, 2023 Rossi Michael J CEO Neutral 52.5 - 0.00% ✗ -
Jun 8, 2023 Jun 9, 2023 Hamill Laura Director Neutral 90.0 +2,330 100.00% ✗ -
Jun 8, 2023 Jun 9, 2023 Wedell-Wedellsborg Johan Director Neutral 55.0 +2,330 0.05% ✗ -
Jun 8, 2023 Jun 9, 2023 Ber Gerard Director Neutral 90.0 +2,330 100.00% ✗ -
Jun 8, 2023 Jun 9, 2023 GILL DAVID N Director Neutral 90.0 +2,330 100.00% ✗ -
Jun 8, 2023 Jun 9, 2023 HEALY JAMES Director Neutral 55.0 +2,330 0.10% ✗ -
Jun 8, 2023 Jun 9, 2023 TYAGI ASHU Director Neutral 90.0 +2,330 100.00% ✗ -
May 15, 2023 May 17, 2023 Wedell-Wedellsborg Johan Director Buy 85.0 +101,740 2.43% ✗ $981.4K
May 15, 2023 May 17, 2023 WG Biotech ApS Director Buy 85.0 +101,740 2.43% ✗ $981.4K
Jan 26, 2023 Jan 30, 2023 Lisby Steen SVP & CHIEF SCIENTIFIC OFFICER Neutral 52.5 - 0.00% ✗ -
Jan 26, 2023 Jan 30, 2023 Lund-Hansen Torben SVP & CHIEF TECHNICAL OFFICER Neutral 52.5 - 0.00% ✗ -
Jan 26, 2023 Jan 30, 2023 Rajah Vignesh SVP & CHIEF MEDICAL OFFICER Neutral 52.5 - 0.00% ✗ -
Jan 26, 2023 Jan 30, 2023 Smith Susan Laura SVP & CHIEF COMMERCIAL OFFICER Neutral 52.5 - 0.00% ✗ -
Jan 26, 2023 Jan 30, 2023 Wilms Joris COO Neutral 52.5 - 0.00% ✗ -
Jan 17, 2023 Jan 19, 2023 Rajah Vignesh SVP & CHIEF MEDICAL OFFICER Neutral 90.0 +17,800 417.25% ✗ -
Jan 17, 2023 Jan 19, 2023 Lund-Hansen Torben SVP & CHIEF TECHNICAL OFFICER Neutral 90.0 +17,800 38.98% ✗ -
Jan 17, 2023 Jan 19, 2023 Gad Thomas Officer Neutral 85.0 +40,500 6.00% ✗ -
Jan 17, 2023 Jan 19, 2023 Smith Susan Laura SVP & CHIEF COMMERCIAL OFFICER Neutral 90.0 +17,800 100.00% ✗ -
Jan 17, 2023 Jan 19, 2023 Lisby Steen SVP & CHIEF SCIENTIFIC OFFICER Neutral 90.0 +17,800 100.00% ✗ -
Jan 17, 2023 Jan 19, 2023 Wilms Joris COO Neutral 90.0 +17,800 100.00% ✗ -
Jan 17, 2023 Jan 19, 2023 Kruse Bo CFO Neutral 85.0 +11,700 6.46% ✗ -
Nov 15, 2022 Nov 16, 2022 Rajah Vignesh SVP & CMO Buy 90.0 +1,195 38.91% ✗ $5.9K
Jul 15, 2022 Jul 19, 2022 Hamill Laura Director Neutral 52.5 - 0.00% ✗ -
Jul 15, 2022 Jul 19, 2022 Wedell-Wedellsborg Johan Director Neutral 52.5 - 0.00% ✗ -
Jul 15, 2022 Jul 19, 2022 HEALY JAMES Director Neutral 52.5 - 0.00% ✗ -
Jul 15, 2022 Jul 19, 2022 Ber Gerard Director Neutral 52.5 - 0.00% ✗ -
Jul 15, 2022 Jul 19, 2022 GILL DAVID N Director Neutral 52.5 - 0.00% ✗ -
Jul 15, 2022 Jul 19, 2022 TYAGI ASHU Director Neutral 52.5 - 0.00% ✗ -
May 18, 2022 May 19, 2022 Gad Thomas Officer Neutral 52.5 - 0.00% ✗ -
Apr 26, 2022 Apr 28, 2022 Rajah Vignesh SVP & CMO Neutral 52.5 - 0.00% ✗ -