MBX | MBX BIO | Owners

S&P 500$7,656.98
+0.86%
2m
DOW 30$52,573.29
+0.98%
2m
NASDAQ 100$29,368.44
+0.91%
2m
Russell 2000$288.89
+0.41%
2m
Russell 1000$417.91
+0.87%
2m
S&P 400$3,714.14
+0.83%
2m
S&P 600$1,726.18
+0.55%
2m

MBX BIO (MBX)

NASDAQ

$59.03+$0.005 (+0.008%)

Price as of Sep 11, 2026 7:30 PM EDT

$2.8B
Market Cap
444.97%
1-Year Change
Biotechnology
Industry

Top Holders

Institutional

Mutual Funds

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
FRAZIER LIFE SCIENCES MANAGEMENT, L.P.	13.98%	6.7M	0 (0.00%)	Jun 30, 2026
FMR LLC	11.18%	5.3M	+2.4M (+44.83%)	Jun 30, 2026
WELLINGTON MANAGEMENT GROUP LLP	10.46%	5.0M	+1.8M (+35.88%)	Jun 30, 2026
NEA MANAGEMENT COMPANY, LLC	7.59%	3.6M	0 (0.00%)	Jun 30, 2026
ORBIMED ADVISORS LLC	7.20%	3.4M	-209,151 (-6.10%)	Jun 30, 2026
BLACKROCK, INC.	6.98%	3.3M	+382,266 (+11.50%)	Jun 30, 2026
PARADIGM BIOCAPITAL ADVISORS LP	5.27%	2.5M	+2.5M (+100.00%)	Jun 30, 2026

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
iSHARES TRUST	3.18%	1.5M	+182,695 (+12.08%)	Jun 30, 2026
VANGUARD INDEX FUNDS	3.03%	1.4M	-322 (-0.02%)	Jun 30, 2026
MUTUAL FUND SERIES TRUST	1.84%	873,492	-16,508 (-1.89%)	Jun 30, 2026
FIDELITY SECURITIES FUND	1.57%	748,750	+715,061 (+95.50%)	Apr 30, 2026
FIDELITY SELECT PORTFOLIOS	1.41%	673,100	+393,100 (+58.40%)	May 31, 2026
FRANKLIN STRATEGIC SERIES	1.41%	671,791	0 (0.00%)	Apr 30, 2026
FIDELITY ADVISOR SERIES VII	1.27%	604,600	+493,500 (+81.62%)	Apr 30, 2026

Current Ownership Distribution

Institutions277.7M (85.90%)
Mutual Funds44.6M (13.81%)
Insiders959,004 (0.30%)
Other0 (0.00%)

Insider Transactions

0.30% (959,004)
Current InsiderOwnership (%, shares)
3
Number of InsiderBuying (last 12 months)
$95.3M
Amount of InsiderBuying (last 12 months)
0
Number of InsiderSelling (last 12 months)
$0.00
Amount of InsiderSelling (last 12 months)

Insider Name & Title	Type	Date	Transaction Value	Shares	Share Price	Shares After Transactions
Hawryluk P. Kent President & CEO	Buy	Mar 13, 2026	$525,662.70	18,500	$28.41	486,777
Hawryluk P. Kent President & CEO	Exempt	Feb 26, 2026	$0.00	28,768	$0.00	91,668
Hawryluk P. Kent President & CEO	Exempt	Feb 26, 2026	$460,288.00	28,768	$16.00	728,274
Hawryluk P. Kent President & CEO	Award	Feb 02, 2026	$0.00	164,500	$0.00	164,500
Bartram Richard Chief Financial Officer	Award	Feb 02, 2026	$0.00	70,000	$0.00	70,000
Hawryluk P. Kent President & CEO	Award	Feb 02, 2026	$0.00	35,250	$0.00	699,506
Azoulay Salomon Chief Medical Officer	Award	Feb 02, 2026	$0.00	70,000	$0.00	70,000
Bartram Richard Chief Financial Officer	Award	Feb 02, 2026	$0.00	15,000	$0.00	15,000
Azoulay Salomon Chief Medical Officer	Award	Feb 02, 2026	$0.00	15,000	$0.00	15,000
Stelzer Laurie	Award	Jan 20, 2026	$0.00	32,000	$0.00	32,000
Hoerter Steven L.	Buy	Oct 17, 2025	$264,984.00	20,000	$13.25	20,000
Heron Patrick J	Buy	Sep 26, 2025	$12.0M	666,666	$18.00	5.2M
Pescovitz Ora H.	Buy	Apr 08, 2025	$45,311.77	7,693	$5.89	24,329
GORDON CARL L	Buy	Feb 18, 2025	$531,918.80	49,070	$10.84	3.3M
ORBIMED ADVISORS LLC	Buy	Feb 18, 2025	$531,918.80	49,070	$10.84	3.3M
GORDON CARL L	Buy	Feb 18, 2025	$1.0M	94,100	$10.84	747,887
ORBIMED ADVISORS LLC	Buy	Feb 18, 2025	$1.0M	94,100	$10.84	747,887
GORDON CARL L	Buy	Feb 14, 2025	$177,823.80	17,962	$9.90	3.2M
ORBIMED ADVISORS LLC	Buy	Feb 14, 2025	$177,823.80	17,962	$9.90	3.2M
GORDON CARL L	Buy	Feb 14, 2025	$290,969.00	29,540	$9.85	3.2M
ORBIMED ADVISORS LLC	Buy	Feb 14, 2025	$290,969.00	29,540	$9.85	3.2M
Hawryluk P. Kent President & CEO	Buy	Feb 04, 2025	$534,500.00	50,000	$10.69	448,277
Azoulay Salomon Chief Medical Officer	Award	Feb 03, 2025	$0.00	90,000	$0.00	90,000
Bartram Richard Chief Financial Officer	Award	Feb 03, 2025	$0.00	95,000	$0.00	95,000
Hawryluk P. Kent President & CEO	Award	Feb 03, 2025	$0.00	243,000	$0.00	243,000