United States Biotechnology & Medical Research

MBX Biosciences Inc (MBX)

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MBX Biosciences Inc. experienced four insider trading transactions over the past ninety days, totaling approximately $365,971 in sales. These divestments involved key personnel, including former officers and the Chief Medical Officer, occurring around the company's recent August earnings report. The stock has demonstrated significant volatility, currently trading near its annual peak.
Ticker: MBX 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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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
3.5
Hawryluk P. Kent Former Officer Officer
Transaction date
Proposed sale
Price
424.61
Quantity 94,801
Value US$716,160
1.3
Azoulay Salomon Chief Medical Officer Officer
Transaction date
Sale
Price
371.66
Quantity 51,349 -8.1%
Value US$3,853,109
3.5
Hawryluk P. Kent Officer; Director Executive Director
Transaction date
Proposed sale
Price
459.14
Quantity 47,743
Value US$3,121,300
1.3
Azoulay Salomon Officer Officer
Transaction date
Proposed sale
Price
65.77
Quantity 370
Value US$24,336
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
30.55
Quantity 9,167
Value US$280,010
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
29.66
Quantity 10,833
Value US$321,273
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
29.66
Quantity 10,833
Value US$321,273
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
36.95
Quantity 15,000
Value US$554,296
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
44.08
Quantity 22,500
Value US$991,901
1.3
Azoulay Salomon Chief Medical Officer Officer
Transaction date
Planned sale
Price
38.30
Quantity 15,003 -50.4%
Value US$574,615
1.3
Azoulay Salomon Chief Medical Officer Officer
Transaction date
Planned sale
Price
38.38
Quantity 55,000 -78.8%
Value US$2,110,900
1.3
Azoulay Salomon Officer Officer
Transaction date
Proposed sale
Price
38.37
Quantity 70,003
Value US$2,685,679
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
37.96
Quantity 10,000
Value US$379,562
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
32.21
Quantity 10,000
Value US$322,050
1.3
Azoulay Salomon Chief Medical Officer Officer
Transaction date
Sale
Price
29.54
Quantity 231 -1.5%
Value US$6,824
3.5
Hawryluk P. Kent President & CEO Executive Director
Transaction date
Sale
Price
29.54
Quantity 607 -0.1%
Value US$17,931
3.5
Hawryluk P. Kent Officer; Director Executive Director
Transaction date
Proposed sale
Price
29.54
Quantity 607
Value US$17,934
1.3
Azoulay Salomon Officer Officer
Transaction date
Proposed sale
Price
29.54
Quantity 231
Value US$6,825
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
31.80
Quantity 5,000
Value US$159,000
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
32.75
Quantity 10,423
Value US$341,378
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
28.48
Quantity 1,061
Value US$30,217
Bartram Richard Former Officer Officer
Transaction date
Proposed sale
Price
30.05
Quantity 10,000
Value US$300,471
3.5
Hawryluk P. Kent President & CEO Executive Director
Transaction date
Purchase
Price
28.41
Quantity 18,500 +4.0%
Value US$525,663
CORNELIUS JAMES M Former Director Non-Executive Director
Transaction date
Proposed sale
Price
35.74
Quantity 30,864
Value US$1,102,991
3.5
Hawryluk P. Kent President & CEO Executive Director
Transaction date
Purchase
Price
13.64
Quantity 20,000 +4.5%
Value US$272,790
3.7
Hoerter Steven L. Non-Executive Director
Transaction date
Purchase
Price
13.25
Quantity 20,000 +inf%
Value US$264,984
3.8
Heron Patrick J Non-Executive Director Large shareholder
Transaction date
Purchase
Price
18.00
Quantity 666,666 +14.6%
Value US$11,999,988
3.4
Pescovitz Ora H. Non-Executive Director
Transaction date
Purchase
Price
5.89
Quantity 7,693 +46.2%
Value US$45,312
2.6
ORBIMED ADVISORS LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
10.84
Quantity 94,100 +14.4%
Value US$1,020,044
2.6
ORBIMED ADVISORS LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
10.84
Quantity 49,070 +1.5%
Value US$531,919
1.6
GORDON CARL L Non-Executive Director Large shareholder
Transaction date
Purchase
Price
10.84
Quantity 94,100 +14.4%
Value US$1,020,044
1.6
GORDON CARL L Non-Executive Director Large shareholder
Transaction date
Purchase
Price
10.84
Quantity 49,070 +1.5%
Value US$531,919
2.6
ORBIMED ADVISORS LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
9.85
Quantity 29,540 +0.9%
Value US$290,969
2.6
ORBIMED ADVISORS LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
9.90
Quantity 17,962 +0.6%
Value US$177,824
1.6
GORDON CARL L Non-Executive Director Large shareholder
Transaction date
Purchase
Price
9.85
Quantity 29,540 +0.9%
Value US$290,969
1.6
GORDON CARL L Non-Executive Director Large shareholder
Transaction date
Purchase
Price
9.90
Quantity 17,962 +0.6%
Value US$177,824
3.5
Hawryluk P. Kent President & CEO Executive Director
Transaction date
Purchase
Price
10.69
Quantity 50,000 +12.6%
Value US$534,500
3.3
Yang Rick Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
2.7
Florence Anthony A. Jr. Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
2.6
ORBIMED ADVISORS LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 250,000 +61.9%
Value US$4,000,000
2.6
ORBIMED ADVISORS LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +18.8%
Value US$8,000,000
2.5
BASKETT FOREST Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
3.6
Chang Carmen Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
2.8
Makhzoumi Mohamad Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
3.9
Walker Paul Edward Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
3.3
Mathers Edward T Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
1.5
Behbahani Ali Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +16.1%
Value US$8,000,000
3.8
Heron Patrick J Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 625,000 +15.9%
Value US$10,000,000
Aynechi Tiba Non-Executive Director
Transaction date
Purchase
Price
16.00
Quantity 750,000 +54.1%
Value US$12,000,000
1.6
GORDON CARL L Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 250,000 +61.9%
Value US$4,000,000
1.6
GORDON CARL L Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 500,000 +18.8%
Value US$8,000,000
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-17 2026-08-17 PrS Proposed sale
3.5
Hawryluk P. Kent

Former Officer

Officer
94,801
424.61
US$716,160 		94,801 424.61 US$716,160
2026-08-05 2026-08-04 S Sale
1.3
Azoulay Salomon

Chief Medical Officer

Officer
51,349 -8.1%
371.66
US$3,853,109 		51,349 -8.1% 371.66 US$3,853,109
2026-08-04 2026-08-04 PrS Proposed sale
3.5
Hawryluk P. Kent

Officer; Director

Executive Director
47,743
459.14
US$3,121,300 		47,743 459.14 US$3,121,300
2026-08-04 2026-08-04 PrS Proposed sale
1.3
Azoulay Salomon

Officer

Officer
370
65.77
US$24,336 		370 65.77 US$24,336
2026-06-10 2026-06-10 PrS Proposed sale
Bartram Richard

Former Officer

Officer
9,167
30.55
US$280,010 		9,167 30.55 US$280,010
2026-06-09 2026-06-09 PrS Proposed sale
Bartram Richard

Former Officer

Officer
10,833
29.66
US$321,273 		10,833 29.66 US$321,273
2026-06-09 2026-06-09 PrS Proposed sale
Bartram Richard

Former Officer

Officer
10,833
29.66
US$321,273 		10,833 29.66 US$321,273
2026-05-13 2026-05-13 PrS Proposed sale
Bartram Richard

Former Officer

Officer
15,000
36.95
US$554,296 		15,000 36.95 US$554,296
2026-05-11 2026-05-11 PrS Proposed sale
Bartram Richard

Former Officer

Officer
22,500
44.08
US$991,901 		22,500 44.08 US$991,901
2026-05-11 2026-05-08 PlS Planned sale
1.3
Azoulay Salomon

Chief Medical Officer

Officer
15,003 -50.4%
38.30
US$574,615 		15,003 -50.4% 38.30 US$574,615
2026-05-11 2026-05-08 PlS Planned sale
1.3
Azoulay Salomon

Chief Medical Officer

Officer
55,000 -78.8%
38.38
US$2,110,900 		55,000 -78.8% 38.38 US$2,110,900
2026-05-08 2026-05-08 PrS Proposed sale
1.3
Azoulay Salomon

Officer

Officer
70,003
38.37
US$2,685,679 		70,003 38.37 US$2,685,679
2026-05-08 2026-05-08 PrS Proposed sale
Bartram Richard

Former Officer

Officer
10,000
37.96
US$379,562 		10,000 37.96 US$379,562
2026-05-07 2026-05-07 PrS Proposed sale
Bartram Richard

Former Officer

Officer
10,000
32.21
US$322,050 		10,000 32.21 US$322,050
2026-05-08 2026-05-06 S Sale
1.3
Azoulay Salomon

Chief Medical Officer

Officer
231 -1.5%
29.54
US$6,824 		231 -1.5% 29.54 US$6,824
2026-05-08 2026-05-06 S Sale
3.5
Hawryluk P. Kent

President & CEO

Executive Director
607 -0.1%
29.54
US$17,931 		607 -0.1% 29.54 US$17,931
2026-05-06 2026-05-06 PrS Proposed sale
3.5
Hawryluk P. Kent

Officer; Director

Executive Director
607
29.54
US$17,934 		607 29.54 US$17,934
2026-05-06 2026-05-06 PrS Proposed sale
1.3
Azoulay Salomon

Officer

Officer
231
29.54
US$6,825 		231 29.54 US$6,825
2026-05-01 2026-05-01 PrS Proposed sale
Bartram Richard

Former Officer

Officer
5,000
31.80
US$159,000 		5,000 31.80 US$159,000
2026-04-22 2026-04-22 PrS Proposed sale
Bartram Richard

Former Officer

Officer
10,423
32.75
US$341,378 		10,423 32.75 US$341,378
2026-03-25 2026-03-25 PrS Proposed sale
Bartram Richard

Former Officer

Officer
1,061
28.48
US$30,217 		1,061 28.48 US$30,217
2026-03-16 2026-03-16 PrS Proposed sale
Bartram Richard

Former Officer

Officer
10,000
30.05
US$300,471 		10,000 30.05 US$300,471
2026-03-16 2026-03-13 B Purchase
3.5
Hawryluk P. Kent

President & CEO

Executive Director
18,500 +4.0%
28.41
US$525,663 		18,500 +4.0% 28.41 US$525,663
2026-01-12 2026-01-12 PrS Proposed sale
CORNELIUS JAMES M

Former Director

Non-Executive Director
30,864
35.74
US$1,102,991 		30,864 35.74 US$1,102,991
2025-10-21 2025-10-20 B Purchase
3.5
Hawryluk P. Kent

President & CEO

Executive Director
20,000 +4.5%
13.64
US$272,790 		20,000 +4.5% 13.64 US$272,790
2025-10-20 2025-10-17 B Purchase
3.7
Hoerter Steven L.
Non-Executive Director
20,000 +inf%
13.25
US$264,984 		20,000 +inf% 13.25 US$264,984
2025-09-30 2025-09-26 B Purchase
3.8
Heron Patrick J
Non-Executive Director Large shareholder
666,666 +14.6%
18.00
US$11,999,988 		666,666 +14.6% 18.00 US$11,999,988
2025-04-10 2025-04-08 B Purchase
3.4
Pescovitz Ora H.
Non-Executive Director
7,693 +46.2%
5.89
US$45,312 		7,693 +46.2% 5.89 US$45,312
2025-02-19 2025-02-18 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director Large shareholder
94,100 +14.4%
10.84
US$1,020,044 		94,100 +14.4% 10.84 US$1,020,044
2025-02-19 2025-02-18 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director Large shareholder
49,070 +1.5%
10.84
US$531,919 		49,070 +1.5% 10.84 US$531,919
2025-02-19 2025-02-18 B Purchase
1.6
GORDON CARL L
Non-Executive Director Large shareholder
94,100 +14.4%
10.84
US$1,020,044 		94,100 +14.4% 10.84 US$1,020,044
2025-02-19 2025-02-18 B Purchase
1.6
GORDON CARL L
Non-Executive Director Large shareholder
49,070 +1.5%
10.84
US$531,919 		49,070 +1.5% 10.84 US$531,919
2025-02-19 2025-02-14 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director Large shareholder
29,540 +0.9%
9.85
US$290,969 		29,540 +0.9% 9.85 US$290,969
2025-02-19 2025-02-14 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director Large shareholder
17,962 +0.6%
9.90
US$177,824 		17,962 +0.6% 9.90 US$177,824
2025-02-19 2025-02-14 B Purchase
1.6
GORDON CARL L
Non-Executive Director Large shareholder
29,540 +0.9%
9.85
US$290,969 		29,540 +0.9% 9.85 US$290,969
2025-02-19 2025-02-14 B Purchase
1.6
GORDON CARL L
Non-Executive Director Large shareholder
17,962 +0.6%
9.90
US$177,824 		17,962 +0.6% 9.90 US$177,824
2025-02-05 2025-02-04 B Purchase
3.5
Hawryluk P. Kent

President & CEO

Executive Director
50,000 +12.6%
10.69
US$534,500 		50,000 +12.6% 10.69 US$534,500
2024-09-17 2024-09-16 B Purchase
0.8
Frazier Life Sciences X, L.P.
Large shareholder
625,000 +15.9%
16.00
US$10,000,000 		625,000 +15.9% 16.00 US$10,000,000
2024-09-17 2024-09-16 B Purchase
3.3
Yang Rick
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
2.5
New Enterprise Associates 17, L.P.
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
2.4
SANDELL SCOTT D
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
2.7
Florence Anthony A. Jr.
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director Large shareholder
250,000 +61.9%
16.00
US$4,000,000 		250,000 +61.9% 16.00 US$4,000,000
2024-09-17 2024-09-16 B Purchase
2.6
ORBIMED ADVISORS LLC
Non-Executive Director Large shareholder
500,000 +18.8%
16.00
US$8,000,000 		500,000 +18.8% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
2.5
BASKETT FOREST
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
3.6
Chang Carmen
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
2.8
Makhzoumi Mohamad
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
3.9
Walker Paul Edward
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
3.3
Mathers Edward T
Non-Executive Director Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
1.5
Behbahani Ali
Large shareholder
500,000 +16.1%
16.00
US$8,000,000 		500,000 +16.1% 16.00 US$8,000,000
2024-09-17 2024-09-16 B Purchase
3.8
Heron Patrick J
Non-Executive Director Large shareholder
625,000 +15.9%
16.00
US$10,000,000 		625,000 +15.9% 16.00 US$10,000,000
2024-09-17 2024-09-16 B Purchase
Aynechi Tiba
Non-Executive Director
750,000 +54.1%
16.00
US$12,000,000 		750,000 +54.1% 16.00 US$12,000,000
2024-09-17 2024-09-16 B Purchase
1.6
GORDON CARL L
Non-Executive Director Large shareholder
250,000 +61.9%
16.00
US$4,000,000 		250,000 +61.9% 16.00 US$4,000,000
2024-09-17 2024-09-16 B Purchase
1.6
GORDON CARL L
Non-Executive Director Large shareholder
500,000 +18.8%
16.00
US$8,000,000 		500,000 +18.8% 16.00 US$8,000,000
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