United States Pharmaceuticals

Inhibrx Biosciences Inc (INBX)

Track

Track

Inhibrx Biosciences recorded twenty insider trading transactions over the past ninety days. Buying activity totaled approximately 4.5 million dollars, while sales reached 558,020 dollars. Following the August results financiers beat, key personnel including Jon Faiz Kayyem and Mark Lappe increased their holdings, whereas Director Kimberly Manhard executed multiple divestments.
Ticker: INBX Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Inhibrx Biosciences Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
356.91
Quantity 45,791 +38.8%
Value US$2,294,880
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
341.77
Quantity 15,983 -12.3%
Value US$2,526,339
3.6
MANHARD KIMBERLY Non-Executive Director
Transaction date
Sale
Price
466.32
Quantity 16,668 -34.7%
Value US$4,360,719
3.6
MANHARD KIMBERLY Director Non-Executive Director
Transaction date
Proposed sale
Price
105.05
Quantity 1,000
Value US$100,000
3.6
MANHARD KIMBERLY Non-Executive Director
Transaction date
Sale
Price
110.26
Quantity 1,000 -5.9%
Value US$100,000
3.6
MANHARD KIMBERLY Director Non-Executive Director
Transaction date
Proposed sale
Price
110.26
Quantity 1,000
Value US$100,000
3.6
MANHARD KIMBERLY Non-Executive Director
Transaction date
Sale
Price
111.78
Quantity 1,000 -5.6%
Value US$100,000
3.6
MANHARD KIMBERLY Director Non-Executive Director
Transaction date
Proposed sale
Price
111.78
Quantity 1,000
Value US$100,000
3.6
MANHARD KIMBERLY Non-Executive Director
Transaction date
Sale
Price
115.80
Quantity 1,000 -5.3%
Value US$100,000
3.6
MANHARD KIMBERLY Director Non-Executive Director
Transaction date
Proposed sale
Price
115.80
Quantity 1,000
Value US$100,000
3.6
MANHARD KIMBERLY Non-Executive Director
Transaction date
Sale
Price
115.14
Quantity 1,000 -5.0%
Value US$100,000
3.6
MANHARD KIMBERLY Director Non-Executive Director
Transaction date
Proposed sale
Price
115.14
Quantity 1,000
Value US$100,000
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
113.52
Quantity 1,000 +1.2%
Value US$100,000
2.8
FORSYTH DOUGLAS Non-Executive Director
Transaction date
Purchase
Price
114.65
Quantity 1,000 +1.1%
Value US$100,000
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
112.28
Quantity 1,000 +1.3%
Value US$100,000
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
111.88
Quantity 1,000 +0.2%
Value US$100,000
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
108.24
Quantity 1,000 +0.1%
Value US$100,000
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
107.12
Quantity 1,000 +0.2%
Value US$100,000
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
100.64
Quantity 1,000 +0.9%
Value US$100,000
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
99.29
Quantity 1,000 +0.8%
Value US$100,000
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
14.19
Quantity 18,750 +36.7%
Value US$266,102
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
14.19
Quantity 18,750 +36.7%
Value US$266,102
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
14.23
Quantity 34,843 +214.4%
Value US$495,708
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
14.23
Quantity 34,843 +214.4%
Value US$495,708
2.7
Vuori Kristiina MD Non-Executive Director
Transaction date
Purchase
Price
15.00
Quantity 6,667 +48.4%
Value US$100,005
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
17.13
Quantity 13,037 +1.9%
Value US$223,324
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
15.05
Quantity 26,963 +4.1%
Value US$405,793
2.7
Vuori Kristiina MD Non-Executive Director
Transaction date
Purchase
Price
15.07
Quantity 6,457 +88.2%
Value US$97,307
2.7
Vuori Kristiina MD Non-Executive Director
Transaction date
Purchase
Price
15.00
Quantity 179 +2.5%
Value US$2,685
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
15.19
Quantity 8,500 +1.3%
Value US$129,115
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
15.21
Quantity 9,500 +1.5%
Value US$144,495
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
15.29
Quantity 26,000 +4.2%
Value US$397,540
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
16.31
Quantity 4,712 +2.9%
Value US$76,853
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
15.66
Quantity 15,288 +10.5%
Value US$239,410
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
14.02
Quantity 10,000 +7.4%
Value US$140,200
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
14.03
Quantity 10,000 +8.0%
Value US$140,300
2.7
Vuori Kristiina MD Non-Executive Director
Transaction date
Purchase
Price
14.00
Quantity 7,140 +inf%
Value US$99,960
3.6
MANHARD KIMBERLY Non-Executive Director
Transaction date
Purchase
Price
13.98
Quantity 10,000 +inf%
Value US$139,800
2.8
FORSYTH DOUGLAS Non-Executive Director
Transaction date
Purchase
Price
14.07
Quantity 59,812 +36.3%
Value US$841,555
2.8
FORSYTH DOUGLAS Non-Executive Director
Transaction date
Purchase
Price
12.89
Quantity 15,188 +10.2%
Value US$195,773
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
12.93
Quantity 12,945 +30.9%
Value US$167,379
2.5
Lappe Mark Chief Executive Officer Executive Director
Transaction date
Purchase
Price
12.97
Quantity 27,055 +182.0%
Value US$350,903
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
17.89
Quantity 8,265 +0.7%
Value US$147,861
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
17.23
Quantity 49,284 +4.5%
Value US$849,163
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
18.24
Quantity 23,726 +2.2%
Value US$432,762
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
17.44
Quantity 65,337 +6.5%
Value US$1,139,477
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
17.90
Quantity 80,738 +8.7%
Value US$1,445,210
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
16.61
Quantity 46,792 +5.3%
Value US$777,215
1.5
Kayyem Jon Faiz Non-Executive Director
Transaction date
Purchase
Price
16.14
Quantity 70,193 +8.7%
Value US$1,132,915
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-09-23 2026-09-23 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
45,791 +38.8%
356.91
US$2,294,880 		45,791 +38.8% 356.91 US$2,294,880
2026-09-17 2026-09-16 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
15,983 -12.3%
341.77
US$2,526,339 		15,983 -12.3% 341.77 US$2,526,339
2026-09-15 2026-09-15 S Sale
3.6
MANHARD KIMBERLY
Non-Executive Director
16,668 -34.7%
466.32
US$4,360,719 		16,668 -34.7% 466.32 US$4,360,719
2026-09-15 2026-09-15 PrS Proposed sale
3.6
MANHARD KIMBERLY

Director

Non-Executive Director
1,000
105.05
US$100,000 		1,000 105.05 US$100,000
2026-09-15 2026-09-14 S Sale
3.6
MANHARD KIMBERLY
Non-Executive Director
1,000 -5.9%
110.26
US$100,000 		1,000 -5.9% 110.26 US$100,000
2026-09-14 2026-09-14 PrS Proposed sale
3.6
MANHARD KIMBERLY

Director

Non-Executive Director
1,000
110.26
US$100,000 		1,000 110.26 US$100,000
2026-09-15 2026-09-11 S Sale
3.6
MANHARD KIMBERLY
Non-Executive Director
1,000 -5.6%
111.78
US$100,000 		1,000 -5.6% 111.78 US$100,000
2026-09-11 2026-09-11 PrS Proposed sale
3.6
MANHARD KIMBERLY

Director

Non-Executive Director
1,000
111.78
US$100,000 		1,000 111.78 US$100,000
2026-09-10 2026-09-09 S Sale
3.6
MANHARD KIMBERLY
Non-Executive Director
1,000 -5.3%
115.80
US$100,000 		1,000 -5.3% 115.80 US$100,000
2026-09-09 2026-09-09 PrS Proposed sale
3.6
MANHARD KIMBERLY

Director

Non-Executive Director
1,000
115.80
US$100,000 		1,000 115.80 US$100,000
2026-09-10 2026-09-08 S Sale
3.6
MANHARD KIMBERLY
Non-Executive Director
1,000 -5.0%
115.14
US$100,000 		1,000 -5.0% 115.14 US$100,000
2026-09-08 2026-09-08 PrS Proposed sale
3.6
MANHARD KIMBERLY

Director

Non-Executive Director
1,000
115.14
US$100,000 		1,000 115.14 US$100,000
2026-09-08 2026-09-08 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
1,000 +1.2%
113.52
US$100,000 		1,000 +1.2% 113.52 US$100,000
2026-09-08 2026-09-08 B Purchase
2.8
FORSYTH DOUGLAS
Non-Executive Director
1,000 +1.1%
114.65
US$100,000 		1,000 +1.1% 114.65 US$100,000
2026-09-08 2026-09-08 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
1,000 +1.3%
112.28
US$100,000 		1,000 +1.3% 112.28 US$100,000
2026-09-08 2026-09-08 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
1,000 +0.2%
111.88
US$100,000 		1,000 +0.2% 111.88 US$100,000
2026-09-08 2026-09-08 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
1,000 +0.1%
108.24
US$100,000 		1,000 +0.1% 108.24 US$100,000
2026-09-08 2026-09-08 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
1,000 +0.2%
107.12
US$100,000 		1,000 +0.2% 107.12 US$100,000
2026-09-08 2026-09-08 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
1,000 +0.9%
100.64
US$100,000 		1,000 +0.9% 100.64 US$100,000
2026-09-08 2026-09-08 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
1,000 +0.8%
99.29
US$100,000 		1,000 +0.8% 99.29 US$100,000
2025-10-09 2025-10-07 S Sale
3.2
VIKING GLOBAL INVESTORS LP
Large shareholder
25,042 -19.6%
32.25
US$807,604 		25,042 -19.6% 32.25 US$807,604
2025-10-09 2025-10-07 S Sale
3.2
VIKING GLOBAL INVESTORS LP
Large shareholder
16,315 -19.6%
32.25
US$526,159 		16,315 -19.6% 32.25 US$526,159
2025-10-09 2025-10-07 S Sale
3.2
VIKING GLOBAL INVESTORS LP
Large shareholder
308,643 -19.6%
32.25
US$9,953,737 		308,643 -19.6% 32.25 US$9,953,737
2024-11-22 2024-11-20 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
18,750 +36.7%
14.19
US$266,102 		18,750 +36.7% 14.19 US$266,102
2024-11-22 2024-11-20 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
18,750 +36.7%
14.19
US$266,102 		18,750 +36.7% 14.19 US$266,102
2024-11-22 2024-11-19 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
34,843 +214.4%
14.23
US$495,708 		34,843 +214.4% 14.23 US$495,708
2024-11-22 2024-11-19 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
34,843 +214.4%
14.23
US$495,708 		34,843 +214.4% 14.23 US$495,708
2024-10-07 2024-10-03 B Purchase
2.7
Vuori Kristiina MD
Non-Executive Director
6,667 +48.4%
15.00
US$100,005 		6,667 +48.4% 15.00 US$100,005
2024-09-16 2024-09-16 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
13,037 +1.9%
17.13
US$223,324 		13,037 +1.9% 17.13 US$223,324
2024-09-16 2024-09-12 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
26,963 +4.1%
15.05
US$405,793 		26,963 +4.1% 15.05 US$405,793
2024-09-12 2024-09-11 B Purchase
2.7
Vuori Kristiina MD
Non-Executive Director
6,457 +88.2%
15.07
US$97,307 		6,457 +88.2% 15.07 US$97,307
2024-09-12 2024-09-10 B Purchase
2.7
Vuori Kristiina MD
Non-Executive Director
179 +2.5%
15.00
US$2,685 		179 +2.5% 15.00 US$2,685
2024-09-10 2024-09-10 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
8,500 +1.3%
15.19
US$129,115 		8,500 +1.3% 15.19 US$129,115
2024-09-10 2024-09-09 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
9,500 +1.5%
15.21
US$144,495 		9,500 +1.5% 15.21 US$144,495
2024-09-10 2024-09-06 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
26,000 +4.2%
15.29
US$397,540 		26,000 +4.2% 15.29 US$397,540
2024-09-03 2024-09-03 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
4,712 +2.9%
16.31
US$76,853 		4,712 +2.9% 16.31 US$76,853
2024-09-03 2024-09-03 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
15,288 +10.5%
15.66
US$239,410 		15,288 +10.5% 15.66 US$239,410
2024-09-03 2024-08-30 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
10,000 +7.4%
14.02
US$140,200 		10,000 +7.4% 14.02 US$140,200
2024-09-03 2024-08-29 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
10,000 +8.0%
14.03
US$140,300 		10,000 +8.0% 14.03 US$140,300
2024-09-03 2024-08-29 B Purchase
2.7
Vuori Kristiina MD
Non-Executive Director
7,140 +inf%
14.00
US$99,960 		7,140 +inf% 14.00 US$99,960
2024-08-30 2024-08-28 B Purchase
3.6
MANHARD KIMBERLY
Non-Executive Director
10,000 +inf%
13.98
US$139,800 		10,000 +inf% 13.98 US$139,800
2024-08-26 2024-08-23 B Purchase
2.8
FORSYTH DOUGLAS
Non-Executive Director
59,812 +36.3%
14.07
US$841,555 		59,812 +36.3% 14.07 US$841,555
2024-08-26 2024-08-22 B Purchase
2.8
FORSYTH DOUGLAS
Non-Executive Director
15,188 +10.2%
12.89
US$195,773 		15,188 +10.2% 12.89 US$195,773
2024-08-22 2024-08-21 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
12,945 +30.9%
12.93
US$167,379 		12,945 +30.9% 12.93 US$167,379
2024-08-22 2024-08-20 B Purchase
2.5
Lappe Mark

Chief Executive Officer

Executive Director
27,055 +182.0%
12.97
US$350,903 		27,055 +182.0% 12.97 US$350,903
2024-06-07 2024-06-05 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
8,265 +0.7%
17.89
US$147,861 		8,265 +0.7% 17.89 US$147,861
2024-06-07 2024-06-05 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
49,284 +4.5%
17.23
US$849,163 		49,284 +4.5% 17.23 US$849,163
2024-06-04 2024-06-04 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
23,726 +2.2%
18.24
US$432,762 		23,726 +2.2% 18.24 US$432,762
2024-06-04 2024-06-04 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
65,337 +6.5%
17.44
US$1,139,477 		65,337 +6.5% 17.44 US$1,139,477
2024-06-04 2024-06-03 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
80,738 +8.7%
17.90
US$1,445,210 		80,738 +8.7% 17.90 US$1,445,210
2024-06-04 2024-06-03 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
46,792 +5.3%
16.61
US$777,215 		46,792 +5.3% 16.61 US$777,215
2024-06-04 2024-05-31 B Purchase
1.5
Kayyem Jon Faiz
Non-Executive Director
70,193 +8.7%
16.14
US$1,132,915 		70,193 +8.7% 16.14 US$1,132,915
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