How many institutions own MBX stock?

A company's 13F filings with the Securities and Exchange Commission (SEC) provides investors with comprehensive information about institutional ownership in a listed company, a sign of strength in terms of how many institutions have confidence in that company. The number of institutional investors who currently own MBX shares is 191, representing 102.55% of the company's common stock.

Who are the major shareholders selling MBX Biosciences, Inc. Common Stock stock?

PFM HEALTH SCIENCES, LP, in the last quarter, reduced its stake in MBX by -64.19% restricting it's holding to 79.31 thousand shares of worth nearly $2.50M. PRICE T ROWE ASSOCIATES INC /MD/ also lessened -11.96% of the MBX shares from its portfolio, reducing its holding to 840.51 thousand shares of worth $26.51M. 683 CAPITAL MANAGEMENT, LLC also shunned MBX shares holding by -44.05% last quarter which brought its holding to 158.8 thousand shares worth $5.01M.

Investors who are buying MBX stock?

As per its latest 13F filing, AFFINITY ASSET ADVISORS, LLC increased its stake in MBX by 51.52% in the last quarter. The institutional holder raised its holding to 250 thousand shares having worth more than $7.89M. STATE STREET CORP also added 110.71% more shares of MBX to its portfolio, raising its holding to 672.74 thousand shares of worth $21.22M. BLACKROCK, INC. also increased its MBX shares holding by 49.16% which brought its holding to 2.92 million shares worth $92.09M.

MBX's major insiders: who are they?

The insider with the most stakes in MBX is Heron Patrick J , at the company. Additionally, MBX stock is highly held by President & CEO Hawryluk P. Kent and director Pescovitz Ora H. among others.

Did an insider recently sell MBX stock?

Company executives, directors, and other insiders own 2.74% percent of MBX Biosciences, Inc. Common Stock's stock. Within the last six months, there have been 0 transaction(s) in which MBX insiders have sold stock, totaling 0 shares. Insiders that have sold shares include .

Which insider recently purchased MBX stock?

There have been 1 transaction(s) during the past 6-months in which MBX Biosciences, Inc. Common Stock insiders have bought stock, totalling 18500 shares

How much of MBX does insiders own?

Around 486.78K MBX Biosciences, Inc. Common Stock shares are held by insiders, which represents about 2.74% of MBX stock.

Who is the insider with the largest stake?

MBX , Heron Patrick J holds the largest portfolio of the company's shares. MBX shares owned by Heron total nearly 5.22 million.

Which institution holds the most shares in MBX?

AFFINITY ASSET ADVISORS, LLC is the largest institutional owner in MBX which holds 250 thousand shares worth $7.89M or 0.73% of the total MBX shares outstanding followed by STATE STREET CORP with ownership of 672.74 thousand shares representing 1.97% of the MBX ownership. BLACKROCK, INC. is the third largest stakeholder with 2.92 million shares or 8.54% of the ownership worth more than $92.09M.

Is MBX Biosciences, Inc. Common Stock stock optionable?

Stock options give the owner the ability but not the obligation to buy or sell a security at a predetermined price and date. Stock options can be classified into two types: puts and calls. A put is a bet on falling stock, and a call is a bet on rising stock. As far as the MBX is concerned, it is a stock which is optionable.

Is there a short position on MBX's shares?

Number of MBX shares short is 4.07M. Shares short is a market sentiment in which investors have sold their shares short in a given stock but have not yet covered them or closed them out.

About how many outstanding MBX shares are there?

As of today, 33.59M shares of MBX are outstanding.

Is there many float in MBX stock?

Float represents the number of tradeable shares in a specific stock. By subtracting restricted and closely-held shares from a firm's total outstanding shares, we can calculate its floating stock. The term "closely-held shares" refers to shares held by employees, major shareholders, and company insiders. At present, MBX has 14.61M shares in float.

MBX short ratio: what is it?

Short ratio is calculated by dividing the number of short shares, short interest or bets that shareholders will sell short from the average daily volume. A higher ratio indicates longer times needed to repurchase borrowed shares (sold). The short ratio for MBX is 8.19.

MBX Biosciences Common Stock (MBX) insider trading activity: Get Latest News Today

Stock Outstanding Shares

Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.

ShortableYes

OptionableYes

Short Percent Of Outstanding Shares12.1

Short Percent Of Float24.21

Shares Outstanding33.59M

Shares Float14.61M

Shares Short4.07M

Short Ratio8.19

24.21%

Short % of Float

12.1%

Short % of Shares Outstanding

Market Insider

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

2.74% Percentage of Shares held by All Insiders

102.55% Percentage of Shares held by All Institutions

105.45% Percentage of Float held by Institutions

191

Number of Institutions Holding Shares

Institutional Ownership

About 102.55% of MBX shares are held by financial institutions. AFFINITY ASSET ADVISORS, LLC is the top corporate investor, holding 250K shares valued at $7.89M. A 0.73% stake in MBX Biosciences, Inc. Common Stock is owned by the company. STATE STREET CORP owns 672.74K shares valued at $21.22M, which translates its holding of 1.97% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Dec 31, 2025	AFFINITY ASSET ADVISORS, LLC	0.73%	250K	7.89M	85K	+51.52%
Dec 31, 2025	STATE STREET CORP	1.97%	672.74K	21.22M	353.47K	+110.71%
Dec 31, 2025	BLACKROCK, INC.	8.54%	2.92M	92.09M	962.3K	+49.16%
Dec 31, 2025	DEEP TRACK CAPITAL, LP	9.5%	3.25M	102.5M	99.79K	+3.17%
Dec 31, 2025	AQR CAPITAL MANAGEMENT LLC	0.09%	31.41K	990.64K	15.65K	+99.25%
Dec 31, 2025	AMERICAN CENTURY COMPANIES INC	0.04%	12.24K	385.92K	12.24K	+100.00%
Dec 31, 2025	RAFFERTY ASSET MANAGEMENT, LLC	0.02%	8.11K	255.88K	8.11K	+100.00%
Dec 31, 2025	GROUP ONE TRADING, L.P.	0.03%	9.43K	297.36K	9.43K	+100.00%
Dec 31, 2025	LOS ANGELES CAPITAL MANAGEMENT LLC	0.03%	10.36K	225.75K	10.36K	+100.00%
Dec 31, 2025	JPMORGAN CHASE & CO	0.04%	14.65K	461.9K	8.47K	+137.17%
Dec 31, 2025	CHINA UNIVERSAL ASSET MANAGEMENT CO., LTD.	0.04%	15.32K	483.1K	10.32K	+206.34%
Dec 31, 2025	METLIFE INVESTMENT MANAGEMENT, LLC	0.05%	16.02K	505.21K	5K	+45.38%
Dec 31, 2025	CITIGROUP INC	0.05%	16.39K	516.97K	16.21K	+9,108.43%
Dec 31, 2025	STEMPOINT CAPITAL LP	0.23%	78.55K	2.48M	3.55K	+4.74%
Dec 31, 2025	PFM HEALTH SCIENCES, LP	0.23%	79.31K	2.5M	-142.2K	-64.19%
Dec 31, 2025	SEI INVESTMENTS CO	0.02%	7.66K	241.5K	7.66K	+100.00%
Dec 31, 2025	BURKEHILL GLOBAL MANAGEMENT, LP	0.29%	100K	3.15M	0	0
Dec 31, 2025	TCG CROSSOVER MANAGEMENT, LLC	1.9%	650K	20.5M	0	0
Dec 31, 2025	D. E. SHAW & CO., INC.	1.96%	671.84K	21.19M	671.84K	+100.00%
Dec 31, 2025	POINT72 ASSET MANAGEMENT, L.P.	1.99%	680.61K	21.47M	52.94K	+8.43%
Dec 31, 2025	PRICE T ROWE ASSOCIATES INC /MD/	2.46%	840.51K	26.51M	-114.22K	-11.96%
Dec 31, 2025	BALYASNY ASSET MANAGEMENT L.P.	0.35%	119.73K	3.78M	94.09K	+366.93%
Dec 31, 2025	683 CAPITAL MANAGEMENT, LLC	0.46%	158.8K	5.01M	-125K	-44.05%
Dec 31, 2025	SCHONFELD STRATEGIC ADVISORS LLC	0.49%	167.13K	5.27M	-115.55K	-40.88%
Dec 31, 2025	NORTHERN TRUST CORP	0.56%	190.88K	6.02M	57.62K	+43.23%
Dec 31, 2025	OPALEYE MANAGEMENT INC.	0.76%	260K	8.2M	7K	+2.77%
Dec 31, 2025	ROCK SPRINGS CAPITAL MANAGEMENT LP	0.83%	282.62K	8.91M	0	0
Dec 31, 2025	KYNAM CAPITAL MANAGEMENT, LP	2.73%	934.8K	29.48M	-1.07M	-53.26%
Dec 31, 2025	WOODLINE PARTNERS LP	2.92%	1M	31.54M	-201.09K	-16.74%
Dec 31, 2025	BRAIDWELL LP	2.98%	1.02M	32.13M	1.02M	+100.00%
Dec 31, 2025	CORMORANT ASSET MANAGEMENT, LP	3.28%	1.12M	35.32M	-105K	-8.57%
Dec 31, 2025	DRIEHAUS CAPITAL MANAGEMENT LLC	4.12%	1.41M	44.41M	-131.48K	-8.54%
Dec 31, 2025	NVP ASSOCIATES, LLC	6.25%	2.14M	67.38M	0	0
Dec 31, 2025	WELLINGTON MANAGEMENT GROUP LLP	9.8%	3.35M	105.66M	-1.47M	-30.55%
Dec 31, 2025	NEA MANAGEMENT COMPANY, LLC	10.57%	3.61M	114M	0	0
Dec 31, 2025	ORBIMED ADVISORS LLC	11.51%	3.94M	124.12M	-67.68K	-1.69%
Dec 31, 2025	INTECH INVESTMENT MANAGEMENT LLC	0.02%	6.86K	216.3K	6.86K	+100.00%
Dec 31, 2025	PROSHARE ADVISORS LLC	0.02%	7.19K	226.68K	7.19K	+100.00%
Dec 31, 2025	POLICE & FIREMEN'S RETIREMENT SYSTEM OF NEW JERSEY	0.02%	7.52K	237.18K	3.01K	+66.78%
Dec 31, 2025	SIMPLEX TRADING, LLC	0.03%	8.93K	281.49K	8.93K	+100.00%
Dec 31, 2025	PROFUND ADVISORS LLC	0.03%	9.21K	290.61K	9.21K	+100.00%
Dec 31, 2025	FRAZIER LIFE SCIENCES MANAGEMENT, L.P.	19.45%	6.65M	209.8M	0	0
Dec 31, 2025	ADVISOR GROUP HOLDINGS, INC.	0.23%	77.6K	2.45M	77.6K	+100.00%
Dec 31, 2025	DAFNA CAPITAL MANAGEMENT LLC	0.48%	165.27K	5.21M	80.27K	+94.43%
Dec 31, 2025		0.36%	121.52K	3.83M	121.52K	+100.00%
Dec 31, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.65%	222.18K	7.01M	52.17K	+30.69%
Dec 31, 2025	UBS GROUP AG	0.82%	281.21K	8.87M	220.49K	+363.09%
Dec 31, 2025	GOLDMAN SACHS GROUP INC	0.97%	331.94K	10.47M	-26.18K	-7.31%
Dec 31, 2025	SOLEUS CAPITAL MANAGEMENT, L.P.	1.2%	408.9K	12.9M	133.9K	+48.69%
Dec 31, 2025	MILLENNIUM MANAGEMENT LLC	1.35%	462.05K	14.57M	-193.37K	-29.50%
Dec 31, 2025	GEODE CAPITAL MANAGEMENT, LLC	1.9%	649.39K	20.49M	175.46K	+37.02%
Dec 31, 2025	PARKMAN HEALTHCARE PARTNERS LLC	2.59%	885.64K	27.93M	112.34K	+14.53%
Dec 31, 2025	EVENTIDE ASSET MANAGEMENT, LLC	2.6%	890K	28.07M	890K	+100.00%
Dec 31, 2025	VANGUARD GROUP INC	5.32%	1.82M	57.33M	140.45K	+8.37%
Dec 31, 2025	ECOR1 CAPITAL, LLC	6.21%	2.12M	66.98M	0	0
Dec 31, 2025	CITADEL ADVISORS LLC	2.37%	809.86K	25.54M	-186.23K	-18.70%
Dec 31, 2025	KOA WEALTH MANAGEMENT, LLC	0.05%	18.41K	580.75K	-8.3K	-31.07%
Dec 31, 2025	GSA CAPITAL PARTNERS LLP	0.06%	19.3K	609K	19.3K	+100.00%
Dec 31, 2025	DEUTSCHE BANK AG\	0.06%	20.03K	631.65K	9.1K	+83.35%
Dec 31, 2025	XTX TOPCO LTD	0.06%	20.14K	635.18K	-18.24K	-47.52%
Dec 31, 2025	CERITY PARTNERS LLC	0.06%	21.32K	672.53K	21.32K	+100.00%
Dec 31, 2025	FOX RUN MANAGEMENT, L.L.C.	0.07%	23.82K	751.28K	23.82K	+100.00%
Dec 31, 2025	WELLS FARGO & COMPANY/MN	0.09%	31.93K	1.01M	20.18K	+171.64%
Dec 31, 2025	RENAISSANCE TECHNOLOGIES LLC	0.1%	32.64K	1.03M	32.64K	+100.00%
Dec 31, 2025	RHUMBLINE ADVISERS	0.1%	33.42K	1.05B	11.6K	+53.16%
Dec 31, 2025	ALPS ADVISORS INC	0.11%	36.87K	1.16M	20.03K	+118.95%
Dec 31, 2025	BANK OF AMERICA CORP /DE/	0.11%	37.89K	1.2B	11.28K	+42.37%
Dec 31, 2025	PLATINUM INVESTMENT MANAGEMENT LTD	0.13%	43.6K	1.38M	-25.83K	-37.21%
Dec 31, 2025	SQUAREPOINT OPS LLC	0.14%	46.7K	1.47M	46.7K	+100.00%
Dec 31, 2025	ACADIAN ASSET MANAGEMENT LLC	0.14%	48.61K	1.53M	43.61K	+870.53%
Dec 31, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.22%	76.53K	2.41M	76.53K	+100.00%
Dec 31, 2025	BARCLAYS PLC	0.15%	52.69K	1.66M	31.07K	+143.65%
Dec 31, 2025	VERITION FUND MANAGEMENT LLC	0.17%	57.58K	1.82M	57.58K	+100.00%
Dec 31, 2025	MORGAN STANLEY	0.17%	59.03K	1.86M	14.16K	+31.55%
Dec 31, 2025	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0.2%	69.55K	2.15M	1.18K	+1.72%
Dec 31, 2025	AARON WEALTH ADVISORS LLC	0.2%	70K	2.21M	20K	+40.00%
Dec 31, 2025	SCHRODER INVESTMENT MANAGEMENT GROUP	0.22%	73.74K	2.28M	-10.03K	-11.97%
Dec 31, 2025	BANK OF NEW YORK MELLON CORP	0.22%	75.26K	2.37M	27.53K	+57.67%
Dec 31, 2025	NUVEEN, LLC	0.22%	75.57K	2.38M	53.42K	+241.26%
Dec 31, 2025	JANE STREET GROUP, LLC	0.25%	86.58K	2.73M	86.58K	+100.00%
Dec 31, 2025	TD ASSET MANAGEMENT INC	0.3%	101.45K	3.2M	-17.34K	-14.60%
Dec 31, 2025	TWO SIGMA INVESTMENTS, LP	0.41%	138.57K	4.37M	124.98K	+919.88%
Dec 31, 2025	TFG ASSET MANAGEMENT GP LTD	0.42%	143.33K	4.52M	-34.51K	-19.41%
Dec 31, 2025	GOELZER INVESTMENT MANAGEMENT, INC.	0.65%	221.67K	6.99M	221.67K	+100.00%
Sep 30, 2025	FMR LLC	0.21%	68.98K	1.21M	7.64K	+12.46%
Sep 30, 2025	CORMORANT ASSET MANAGEMENT, LP	3.58%	1.23M	21.44M	525K	+75.00%
Sep 30, 2025	LONGAEVA PARTNERS L.P.	0.66%	224.43K	3.93M	224.43K	+100.00%
Sep 30, 2025	TFG ASSET MANAGEMENT GP LTD	0.52%	177.84K	3.11M	177.84K	+100.00%
Sep 30, 2025	PFM HEALTH SCIENCES, LP	0.65%	221.51K	3.88M	221.51K	+100.00%
Sep 30, 2025	WOODLINE PARTNERS LP	3.51%	1.2M	21.02M	300.05K	+33.30%
Sep 30, 2025	GOLDMAN SACHS GROUP INC	1.05%	358.12K	6.27M	358.12K	+100.00%
Sep 30, 2025	STATE STREET CORP	0.93%	319.27K	5.59M	54.16K	+20.43%
Sep 30, 2025	683 CAPITAL MANAGEMENT, LLC	0.83%	283.8K	4.97M	283.8K	+100.00%
Sep 30, 2025	SOLEUS CAPITAL MANAGEMENT, L.P.	0.8%	275K	4.81M	275K	+100.00%
Sep 30, 2025	SCHONFELD STRATEGIC ADVISORS LLC	0.83%	282.68K	4.95M	-348.74K	-55.23%
Sep 30, 2025	ROCK SPRINGS CAPITAL MANAGEMENT LP	0.83%	282.62K	4.95M	282.62K	+100.00%
Sep 30, 2025	ORBIMED ADVISORS LLC	11.7%	4M	70.05M	0	0
Sep 30, 2025	NEA MANAGEMENT COMPANY, LLC	10.57%	3.61M	63.25M	0	0
Sep 30, 2025	DRIEHAUS CAPITAL MANAGEMENT LLC	4.5%	1.54M	26.94M	-32.27K	-2.05%
Sep 30, 2025	FRANKLIN RESOURCES INC	3.82%	1.31M	22.88M	812.44K	+164.18%
Sep 30, 2025	BAKER BROS. ADVISORS LP	0.81%	277.78K	4.86M	277.78K	+100.00%
Sep 30, 2025	AFFINITY ASSET ADVISORS, LLC	0.48%	165K	2.89M	165K	+100.00%
Sep 30, 2025	NORTHERN TRUST CORP	0.39%	133.27K	2.33M	17.67K	+15.29%
Sep 30, 2025	TD ASSET MANAGEMENT INC	0.35%	118.79K	2.08M	-52.51K	-30.65%
Sep 30, 2025	FRAZIER LIFE SCIENCES MANAGEMENT, L.P.	19.45%	6.65M	116.41M	666.67K	+11.14%
Sep 30, 2025	WELLINGTON MANAGEMENT GROUP LLP	14.1%	4.82M	84.41M	2.56M	+112.80%
Sep 30, 2025	DEEP TRACK CAPITAL, LP	9.21%	3.15M	55.13M	961.41K	+43.93%
Sep 30, 2025	MILLENNIUM MANAGEMENT LLC	1.92%	655.42K	11.47M	-111.42K	-14.53%
Sep 30, 2025	TCG CROSSOVER MANAGEMENT, LLC	1.9%	650K	11.38M	0	0
Sep 30, 2025	POINT72 ASSET MANAGEMENT, L.P.	1.84%	627.67K	10.98M	-346.12K	-35.54%
Sep 30, 2025	GEODE CAPITAL MANAGEMENT, LLC	1.39%	473.93K	8.3M	125.49K	+36.01%
Sep 30, 2025	OPALEYE MANAGEMENT INC.	0.74%	253K	4.43M	13.68K	+5.72%
Sep 30, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.59%	203.2K	3.56M	180.6K	+799.12%
Sep 30, 2025	IKARIAN CAPITAL, LLC	0.58%	200K	3.5M	200K	+100.00%
Sep 30, 2025	LMR PARTNERS LLP	0.5%	170.1K	2.98M	170.1K	+100.00%
Sep 30, 2025	BURKEHILL GLOBAL MANAGEMENT, LP	0.29%	100K	1.75M	100K	+100.00%
Sep 30, 2025	DIADEMA PARTNERS LP	0.29%	100K	1.75M	100K	+100.00%
Sep 30, 2025	HUDSON BAY CAPITAL MANAGEMENT LP	0.25%	85K	1.49M	85K	+100.00%
Sep 30, 2025	DAFNA CAPITAL MANAGEMENT LLC	0.25%	85K	1.49M	85K	+100.00%
Sep 30, 2025	SCHRODER INVESTMENT MANAGEMENT GROUP	0.24%	83.77K	1.5M	83.77K	+100.00%
Sep 30, 2025	MURCHINSON LTD.	0.23%	80K	1.4M	80K	+100.00%
Sep 30, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.5%	170.01K	2.98M	62.52K	+58.17%
Sep 30, 2025	AARON WEALTH ADVISORS LLC	0.15%	50K	875K	0	0
Sep 30, 2025	BANK OF NEW YORK MELLON CORP	0.14%	47.74K	835.36K	9.7K	+25.51%
Sep 30, 2025	READYSTATE ASSET MANAGEMENT LP	0.12%	38.5K	673.75K	38.5K	+100.00%
Sep 30, 2025	UNIVERSAL- BETEILIGUNGS- UND SERVICEGESELLSCHAFT MBH	0.09%	28.46K	498.07K	28.46K	+100.00%
Sep 30, 2025	KOA WEALTH MANAGEMENT, LLC	0.08%	26.71K	467.48K	-5.04K	-15.87%
Sep 30, 2025	NUVEEN, LLC	0.07%	22.14K	387.5K	0	0
Sep 30, 2025	RHUMBLINE ADVISERS	0.07%	21.82K	381.87K	-1.84K	-7.78%
Sep 30, 2025	BARCLAYS PLC	0.06%	21.63K	378.46K	-36.92K	-63.06%
Sep 30, 2025	ALPS ADVISORS INC	0.05%	16.84K	294.7K	-1.21K	-6.69%
Sep 30, 2025	SILVERARC CAPITAL MANAGEMENT, LLC	0.04%	15K	262.5K	15K	+100.00%
Sep 30, 2025	INVESCO LTD.	0.04%	11.79K	206.29K	11.79K	+100.00%
Sep 30, 2025	WELLS FARGO & COMPANY/MN	0.04%	11.76K	205.71K	812	+7.42%
Sep 30, 2025	METLIFE INVESTMENT MANAGEMENT, LLC	0.03%	11.02K	192.82K	0	0
Sep 30, 2025	DEUTSCHE BANK AG\	0.03%	10.92K	191.15K	2.16K	+24.66%
Sep 30, 2025	JPMORGAN CHASE & CO	0.02%	6.18K	108.06K	-2.01K	-24.55%
Sep 30, 2025	ACADIAN ASSET MANAGEMENT LLC	0.02%	5.01K	86K	5.01K	+100.00%
Sep 30, 2025	CHINA UNIVERSAL ASSET MANAGEMENT CO., LTD.	0.01%	5K	87.5K	5K	+100.00%
Sep 30, 2025	POLICE & FIREMEN'S RETIREMENT SYSTEM OF NEW JERSEY	0.01%	4.51K	78.91K	2.37K	+110.41%
Sep 30, 2025	NEW YORK STATE COMMON RETIREMENT FUND	0.01%	4.3K	75.25K	0	0
Sep 30, 2025	BNP PARIBAS ARBITRAGE, SNC	0.01%	2.9K	50.68K	1.57K	+117.91%
Sep 30, 2025	NISA INVESTMENT ADVISORS, LLC	0%	1.59K	27.86K	0	0
Sep 30, 2025	RUSSELL INVESTMENTS GROUP, LTD.	0%	1.48K	25.92K	1.45K	+4,131.43%
Sep 30, 2025	CWM, LLC	0%	1.38K	24K	-418	-23.20%
Sep 30, 2025	LEGAL & GENERAL GROUP PLC	0%	1.33K	23.24K	-223	-14.38%
Sep 30, 2025	AMERITAS INVESTMENT PARTNERS, INC.	0%	1.18K	20.6K	0	0
Sep 30, 2025	STERLING CAPITAL MANAGEMENT LLC	0%	1.06K	18.52K	598	+130.00%
Sep 30, 2025	STRS OHIO	0%	700	12.25K	0	0
Sep 30, 2025	AMALGAMATED BANK	0%	384	7K	0	0
Sep 30, 2025	US BANCORP \DE\	0%	337	5.9K	0	0
Sep 30, 2025	FARTHER FINANCE ADVISORS, LLC	0%	328	5.74K	328	+100.00%
Sep 30, 2025	GAMMA INVESTING LLC	0%	299	5.23K	0	0
Sep 30, 2025	PNC FINANCIAL SERVICES GROUP, INC.	0%	252	4.41K	252	+100.00%
Sep 30, 2025	SIGNATUREFD, LLC	0%	179	3.13K	78	+77.23%
Sep 30, 2025	CITIGROUP INC	0%	178	3.12K	-5.55K	-96.89%
Sep 30, 2025	PHYSICIAN WEALTH ADVISORS, INC.	0%	109	1.91K	0	0
Sep 30, 2025	WASHINGTON TRUST ADVISORS, INC.	0%	83	1.45K	83	+100.00%
Sep 30, 2025	RISE ADVISORS, LLC	0%	68	1.19K	0	0
Sep 30, 2025	PARALLEL ADVISORS, LLC	0%	61	1.07K	-47	-43.52%
Sep 30, 2025	BLACKROCK, INC.	5.72%	1.96M	34.26M	945.92K	+93.51%
Sep 30, 2025	VANGUARD GROUP INC	4.9%	1.68M	29.35M	633.68K	+60.72%
Sep 30, 2025	EXODUSPOINT CAPITAL MANAGEMENT, LP	0.29%	100K	1.75M	100K	+100.00%
Sep 30, 2025	CAPTION MANAGEMENT, LLC	0.22%	75K	1.31M	75K	+100.00%
Sep 30, 2025	PRICE T ROWE ASSOCIATES INC /MD/	2.79%	954.73K	16.71M	-392.18K	-29.12%
Sep 30, 2025	PARKMAN HEALTHCARE PARTNERS LLC	2.26%	773.3K	13.53M	-98.63K	-11.31%
Sep 30, 2025	STEMPOINT CAPITAL LP	0.22%	75K	1.31M	-66.02K	-46.82%
Sep 30, 2025	BOOTHBAY FUND MANAGEMENT, LLC	0.22%	72.8K	1.27M	72.8K	+100.00%
Sep 30, 2025	PLATINUM INVESTMENT MANAGEMENT LTD	0.21%	69.43K	1.21M	-43.32K	-38.42%
Sep 30, 2025	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0.2%	68.38K	1.2M	-18.72K	-21.49%
Sep 30, 2025	UBS GROUP AG	0.18%	60.73K	1.06M	29.76K	+96.10%
Sep 30, 2025	NVP ASSOCIATES, LLC	6.25%	2.14M	37.39M	0	0
Sep 30, 2025	ECOR1 CAPITAL, LLC	6.21%	2.12M	37.16M	973.81K	+84.69%
Sep 30, 2025	KYNAM CAPITAL MANAGEMENT, LP	5.85%	2M	35M	2M	+100.00%
Sep 30, 2025	SECTORAL ASSET MANAGEMENT INC	0.57%	194.9K	3.41M	3.07K	+1.60%
Sep 30, 2025	CITADEL ADVISORS LLC	0.33%	114.5K	2M	93.8K	+453.14%
Jun 30, 2025	CORMORANT ASSET MANAGEMENT, LP	2.09%	700K	7.99M	0	0
Jun 30, 2025	BANK OF AMERICA CORP /DE/	0.13%	42.39K	483.64K	14.3K	+50.90%
Jun 30, 2025	OPALEYE MANAGEMENT INC.	0.72%	239.32K	2.73M	-10.68K	-4.27%
Jun 30, 2025	SECTORAL ASSET MANAGEMENT INC	0.57%	191.83K	2.19M	191.83K	+100.00%
Jun 30, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.07%	22.6K	257.87K	22.6K	+100.00%
Jun 30, 2025	SIO CAPITAL MANAGEMENT, LLC	0.72%	241K	2.75M	241K	+100.00%
Jun 30, 2025	DRIEHAUS CAPITAL MANAGEMENT LLC	4.7%	1.57M	17.94M	-7.3K	-0.46%
Jun 30, 2025	MORGAN STANLEY	0.07%	24.01K	273.93K	-90.6K	-79.05%
Jun 30, 2025	TD ASSET MANAGEMENT INC	0.51%	171.3K	1.95M	19.8K	+13.07%
Jun 30, 2025	FRAZIER LIFE SCIENCES MANAGEMENT, L.P.	17.9%	5.99M	68.29M	0	0
Jun 30, 2025	ORBIMED ADVISORS LLC	11.97%	4M	45.67M	0	0
Jun 30, 2025	NEA MANAGEMENT COMPANY, LLC	10.81%	3.61M	41.24M	0	0
Jun 30, 2025	WELLINGTON MANAGEMENT GROUP LLP	6.78%	2.27M	25.86M	-371.89K	-14.09%
Jun 30, 2025	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0.09%	29.2K	333.17K	29.2K	+100.00%
Jun 30, 2025	UBS GROUP AG	0.09%	30.97K	353.33K	3.47K	+12.61%
Jun 30, 2025	KOA WEALTH MANAGEMENT, LLC	0.09%	31.75K	362.29K	12.36K	+63.70%
Jun 30, 2025	ROCKEFELLER CAPITAL MANAGEMENT L.P.	0.1%	34.14K	389.48K	34.14K	+100.00%
Jun 30, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.32%	107.48K	1.23M	12.94K	+13.68%
Jun 30, 2025	PLATINUM INVESTMENT MANAGEMENT LTD	0.34%	112.74K	1.29M	-73.19K	-39.36%
Jun 30, 2025	RESOLUTE CAPITAL ASSET PARTNERS LLC	0.15%	49.67K	566.74K	49.67K	+100.00%
Jun 30, 2025	VANGUARD GROUP INC	3.12%	1.04M	11.91M	378.12K	+56.81%
Jun 30, 2025	NORTHERN TRUST CORP	0.35%	115.59K	1.32M	19.09K	+19.78%
Jun 30, 2025	STEMPOINT CAPITAL LP	0.42%	141.02K	1.61M	44.41K	+45.96%
Jun 30, 2025	STATE STREET CORP	0.79%	265.12K	3.03M	87.9K	+49.60%
Jun 30, 2025	BANK OF NEW YORK MELLON CORP	0.11%	38.03K	433.95K	14.12K	+59.06%
Jun 30, 2025	AARON WEALTH ADVISORS LLC	0.15%	50K	570.5K	0	0
Jun 30, 2025	MILLENNIUM MANAGEMENT LLC	0.15%	51.3K	585.33K	51.3K	+100.00%
Jun 30, 2025	FMR LLC	0.18%	61.33K	699.81K	17.09K	+38.64%
Jun 30, 2025	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0.26%	87.1K	993.78K	36.99K	+73.81%
Jun 30, 2025	FRANKLIN RESOURCES INC	1.48%	494.85K	5.65M	125.54K	+33.99%
Jun 30, 2025	SCHONFELD STRATEGIC ADVISORS LLC	1.89%	631.41K	7.2M	430.77K	+214.70%
Jun 30, 2025	TCG CROSSOVER MANAGEMENT, LLC	1.94%	650K	7.42M	0	0
Jun 30, 2025	ECOR1 CAPITAL, LLC	3.44%	1.15M	13.12M	-109.48K	-8.69%
Jun 30, 2025	BIOIMPACT CAPITAL LLC	3.87%	1.29M	14.77M	161.47K	+14.25%
Jun 30, 2025	GEODE CAPITAL MANAGEMENT, LLC	1.04%	348.45K	3.98M	73.99K	+26.96%
Jun 30, 2025	RA CAPITAL MANAGEMENT, L.P.	1.13%	377.84K	4.31M	-1.13M	-75.00%
Jun 30, 2025	POINT72 ASSET MANAGEMENT, L.P.	2.91%	973.79K	11.11M	863.31K	+781.40%
Jun 30, 2025	NVP ASSOCIATES, LLC	6.39%	2.14M	24.38M	0	0
Jun 30, 2025	BARCLAYS PLC	0.17%	58.54K	668K	46.72K	+395.35%
Jun 30, 2025	EXOME ASSET MANAGEMENT LLC	0.19%	63.08K	719.7K	-70.04K	-52.61%
Jun 30, 2025	WALLEYE CAPITAL LLC	0.21%	70.33K	802.5K	37.84K	+116.48%
Jun 30, 2025	DEEP TRACK CAPITAL, LP	6.54%	2.19M	24.97M	-830.34K	-27.50%
Jun 30, 2025	BLACKROCK, INC.	3.02%	1.01M	11.54M	228.5K	+29.18%
Jun 30, 2025	PRICE T ROWE ASSOCIATES INC /MD/	4.03%	1.35M	15.37M	245.99K	+22.34%
Jun 30, 2025	RHUMBLINE ADVISERS	0.07%	23.66K	269.98K	14.95K	+171.60%
Jun 30, 2025	WOODLINE PARTNERS LP	2.69%	901.1K	10.28M	23.64K	+2.69%
Jun 30, 2025	PARKMAN HEALTHCARE PARTNERS LLC	2.61%	871.93K	9.95M	543.61K	+165.57%
Mar 31, 2025	BANK OF AMERICA CORP /DE/	0.08%	28.09K	207.3K	12.03K	+74.92%
Mar 31, 2025	AARON WEALTH ADVISORS LLC	0.15%	50K	369K	50K	+100.00%
Mar 31, 2025	MARSHALL WACE, LLP	0.33%	111.21K	820.74K	85.31K	+329.39%
Mar 31, 2025	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0.15%	50.11K	369.81K	435	+0.88%
Mar 31, 2025	EXOME ASSET MANAGEMENT LLC	0.4%	133.11K	982.37K	133.11K	+100.00%
Mar 31, 2025	CORMORANT ASSET MANAGEMENT, LP	2.1%	700K	5.17M	0	0
Mar 31, 2025	WALLEYE CAPITAL LLC	0.1%	32.49K	239.78K	32.49K	+100.00%
Mar 31, 2025	TWO SIGMA INVESTMENTS, LP	0.1%	33.83K	249.69K	33.83K	+100.00%
Mar 31, 2025	PRELUDE CAPITAL MANAGEMENT, LLC	0.12%	40.23K	296.86K	40.23K	+100.00%
Mar 31, 2025	GEODE CAPITAL MANAGEMENT, LLC	0.82%	274.46K	2.03M	8.76K	+3.30%
Mar 31, 2025	BANK OF NEW YORK MELLON CORP	0.07%	23.91K	176.46K	-4	-0.02%
Mar 31, 2025	PRICE T ROWE ASSOCIATES INC /MD/	3.29%	1.1M	8.13M	-60.61K	-5.22%
Mar 31, 2025	BIOIMPACT CAPITAL LLC	3.39%	1.13M	8.36M	1.13M	+100.00%
Mar 31, 2025	MORGAN STANLEY	0.34%	114.61K	845.82K	90.78K	+380.85%
Mar 31, 2025	AFFINITY ASSET ADVISORS, LLC	0.52%	175K	1.29M	175K	+100.00%
Mar 31, 2025	JPMORGAN CHASE & CO	0.6%	201.24K	1.49M	192.13K	+2,109.92%
Mar 31, 2025	VERITION FUND MANAGEMENT LLC	0.06%	19.82K	146.24K	19.82K	+100.00%
Mar 31, 2025	SQUAREPOINT OPS LLC	0.06%	20.1K	148.32K	20.1K	+100.00%
Mar 31, 2025	UBS GROUP AG	0.08%	27.5K	202.94K	-18.4K	-40.09%
Mar 31, 2025	JUMP FINANCIAL, LLC	0.09%	29K	213.99K	29K	+100.00%
Mar 31, 2025	BNP PARIBAS ARBITRAGE, SNC	0.09%	30.92K	228.16K	29.43K	+1,980.48%
Mar 31, 2025	FMR LLC	0.13%	44.24K	326.49K	19.67K	+80.04%
Mar 31, 2025	SHAY CAPITAL LLC	0.15%	49.13K	362.6K	49.13K	+100.00%
Mar 31, 2025	NORTHERN TRUST CORP	0.29%	96.51K	712.22K	5.83K	+6.42%
Mar 31, 2025	STEMPOINT CAPITAL LP	0.29%	96.62K	713.02K	96.62K	+100.00%
Mar 31, 2025	CITIGROUP INC	0.29%	97.33K	718.28K	88.46K	+998.01%
Mar 31, 2025	POINT72 ASSET MANAGEMENT, L.P.	0.33%	110.48K	815.36K	110.48K	+100.00%
Mar 31, 2025	TD ASSET MANAGEMENT INC	0.45%	151.5K	1.12M	114.9K	+313.95%
Mar 31, 2025	MILLENNIUM MANAGEMENT LLC	0.51%	170.44K	1.26M	-163.2K	-48.92%
Mar 31, 2025	PARKMAN HEALTHCARE PARTNERS LLC	0.98%	328.32K	2.42M	158.32K	+93.13%
Mar 31, 2025	FRANKLIN RESOURCES INC	1.11%	369.32K	2.73M	15	0.00%
Mar 31, 2025	VANGUARD GROUP INC	1.99%	665.56K	4.91M	-5.39K	-0.80%
Mar 31, 2025	ECOR1 CAPITAL, LLC	3.77%	1.26M	9.29M	0	0
Mar 31, 2025	DRIEHAUS CAPITAL MANAGEMENT LLC	4.73%	1.58M	11.65M	-2.55K	-0.16%
Mar 31, 2025	NVP ASSOCIATES, LLC	6.39%	2.14M	15.77M	0	0
Mar 31, 2025	WELLINGTON MANAGEMENT GROUP LLP	7.9%	2.64M	19.47M	-271.12K	-9.32%
Mar 31, 2025	DEEP TRACK CAPITAL, LP	9.04%	3.02M	22.28M	0	0
Mar 31, 2025	RA CAPITAL MANAGEMENT, L.P.	4.52%	1.51M	11.15M	0	0
Mar 31, 2025	NEA MANAGEMENT COMPANY, LLC	10.82%	3.61M	26.67M	0	0
Mar 31, 2025	ORBIMED ADVISORS LLC	11.98%	4M	29.54M	190.67K	+5.00%
Mar 31, 2025	FRAZIER LIFE SCIENCES MANAGEMENT, L.P.	17.91%	5.99M	44.17M	0	0
Mar 31, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.28%	94.55K	697.75K	1.24K	+1.32%
Mar 31, 2025	PLATINUM INVESTMENT MANAGEMENT LTD	0.56%	185.93K	1.37M	23.84K	+14.71%
Mar 31, 2025	TCG CROSSOVER MANAGEMENT, LLC	1.95%	650K	4.8M	0	0
Mar 31, 2025	STATE STREET CORP	0.53%	177.22K	1.31M	34.57K	+24.23%
Mar 31, 2025	OPALEYE MANAGEMENT INC.	0.75%	250K	1.85M	250K	+100.00%
Mar 31, 2025	BLACKROCK, INC.	2.34%	783.04K	5.78M	55.09K	+7.57%
Mar 31, 2025	WOODLINE PARTNERS LP	2.63%	877.46K	6.48M	268.74K	+44.15%
Mar 31, 2025	ALPS ADVISORS INC	0.08%	26.03K	192.13K	-986	-3.65%
Mar 31, 2025	SCHONFELD STRATEGIC ADVISORS LLC	0.6%	200.64K	1.48M	129.14K	+180.62%

Insiders

Among the MBX insiders holding of 2.74% of the stake in company, HERON PATRICK J, , holds the largest shares of 5.22M. HAWRYLUK P. KENT, President & CEO, is the second largest MBX insider with ownership of 486.78K shares. PESCOVITZ ORA H., director, stands third with possession of 24.33K shares of that stake.

Insiders	Designation	Shares Held
HERON PATRICK J		5.22M
HAWRYLUK P. KENT	President & CEO	486.78K
PESCOVITZ ORA H.	director	24.33K
HOERTER STEVEN L.	director	20K

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Mar 13, 2026	HAWRYLUK P. KENT	PURCHASE	28.41	18.5K	525.66K	486.78K
Oct 20, 2025	HAWRYLUK P. KENT	PURCHASE	13.64	20K	272.79K	468.28K
Oct 17, 2025	HOERTER STEVEN L.	PURCHASE	13.25	20K	264.98K	20K
Sep 26, 2025	HERON PATRICK J	PURCHASE	18.00	666.67K	12M	5.22M
Apr 08, 2025	PESCOVITZ ORA H.	PURCHASE	5.89	7.69K	45.31K	24.33K

Insider Transaction Summary (6 Months)

SHARESTRANS

PURCHASE18.5K1

SALES00

NET SHARES18.5K1

SHARES HELD486.78K1

% NET SHARES-96.2%0%

Frequently Asked Questions