ARMP · Armata Pharmaceuticals, Inc.

$4.56 -0.26 (-5.39%) At close · Aug 14

Market Cap

$169.55M

37.18M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 53

Total Value: $32,287,375

Total Shares: 4,982,624

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 53 13F filers · Δ vs Mar 31, 2026

Top Holder

42.3%

−11.4 pts

Top 5

78.2%

+2.2 pts

Top 10

89.9%

+3.8 pts

HHI

2,169

Moderately concentrated−898

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +8

Institutional value: -19.7%

Shares held: +26.9%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+494,936	559,986
Mega MILLENNIUM MANAGEMENT LLC	+212,508	470,500
Mega GEODE CAPITAL MANAGEMENT, LLC	+155,995	270,550
Mega VANGUARD CAPITAL MANAGEMENT LLC	+121,940	487,968
Micro Dauntless Investment Group, LLC	+113,311	203,891

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid EDGEWOOD MANAGEMENT LLC	−20,000	80,000
Mid Madison Asset Management, LLC	−500	2,107,175
Mega BANK OF AMERICA CORP /DE/	−409	11,305

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega VANGUARD PORTFOLIO MANAGEMENT LLC	81,354	$527,173
Mega Bank of New York Mellon Corp	29,749	$192,772
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC	28,857	$186,993
Mega Nuveen, LLC	15,905	$103,064
Large NEW YORK STATE COMMON RETIREMENT FUND	15,400	$99,792

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid 683 Capital Management, LLC	137,000	$1,402,880
Large SEI INVESTMENTS CO	74,192	$759,726
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	64,759	$663,132
Mid Informed Momentum Co LLC	60,955	$624,179
Mega GOLDMAN SACHS GROUP INC	60,953	$624,158

Filter: New 19 Increased 17 Reduced 3 Sold out 11 Unchanged 14

Showing 53 of 53

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Madison Asset Management, LLC

$13,654,494

42.29%

2,107,175

BlackRock, Inc.

$3,628,706

11.24%

559,986

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	2,112	$13,685	0.4%	Sole
BlackRock Investment Management, LLC	33,810	$219,088	6.0%	Sole
BLACKROCK ADVISORS LLC	23,964	$155,286	4.3%	Sole
BlackRock Fund Advisors	348,945	$2,261,163	62.3%	Sole
BlackRock Institutional Trust Company, N.A.	151,155	$979,484	27.0%	Sole

VANGUARD CAPITAL MANAGEMENT LLC

$3,162,032

9.79%

487,968

MILLENNIUM MANAGEMENT LLC

$3,048,840

9.44%

470,500

GEODE CAPITAL MANAGEMENT, LLC

$1,753,163

5.43%

270,550

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	41,302	$267,636	15.3%	Defined
Held directly	229,248	$1,485,527	84.7%	Defined

Dauntless Investment Group, LLC

$1,321,213

4.09%

203,891

STATE STREET CORP

$839,808

2.60%

129,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SSGA FUNDS MANAGEMENT, INC. joint	129,600	$839,808	100.0%	Defined

NORTHERN TRUST CORP

$581,845

1.80%

89,791

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	87,951	$569,922	98.0%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	1,840	$11,923	2.0%	Other

VANGUARD PORTFOLIO MANAGEMENT LLC

$527,173

1.63%

81,354

EDGEWOOD MANAGEMENT LLC

$518,400

1.61%

80,000

VANGUARD FIDUCIARY TRUST CO

$515,127

1.60%

79,495

Grey Ledge Advisors, LLC

$324,000

1.00%

50,000

RENAISSANCE TECHNOLOGIES LLC

$313,100

0.97%

48,318

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$289,539

0.90%

44,682

SeaCrest Wealth Management, LLC

$269,075

0.83%

41,524

Bank of New York Mellon Corp

$192,772

0.60%

29,749

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	10,549	$68,357	35.5%	Defined
The Bank of New York Mellon	19,199	$124,409	64.5%	Defined
Held directly	1	$6	0.0%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$186,993

0.58%

28,857

Hudson Bay Capital Management LP

$113,944

0.35%

17,584

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Hudson Bay Capital UK LLP	17,584	$113,944	100.0%	Defined

Nuveen, LLC

$103,064

0.32%

15,905

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TEACHERS ADVISORS, LLC joint	15,905	$103,064	100.0%	Defined

NEW YORK STATE COMMON RETIREMENT FUND

$99,792

0.31%

15,400

UBS Group AG

$88,755

0.27%

13,697

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	500	$3,240	3.7%	Defined
UBS AG	10,637	$68,927	77.7%	Defined
UBS Switzerland AG	1,961	$12,707	14.3%	Defined
UBS Securities LLC	599	$3,881	4.4%	Defined

CAPTRUST FINANCIAL ADVISORS

$85,147

0.26%

13,140

DEUTSCHE BANK AG\

$77,538

0.24%

11,966

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	402	$2,604	3.4%	Defined
DWS Investments UK Ltd	11,564	$74,934	96.6%	Defined

BANK OF AMERICA CORP /DE/

$73,256

0.23%

11,305

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	11,305	$73,256	100.0%	Defined

XTX Topco Ltd

$70,152

0.22%

10,826

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	10,826	$70,152	100.0%	Defined

WELLS FARGO & COMPANY/MN

$70,106

0.22%

10,819

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	10,818	$70,100	100.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	1	$6	0.0%	Defined

RHUMBLINE ADVISERS

$54,775

0.17%

8,453

Police & Firemen's Retirement System of New Jersey

$39,495

0.12%

6,095

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	6,095	$39,495	100.0%	Defined

CITIGROUP INC

$36,307

0.11%

5,603

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	5,603	$36,307	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$35,387

0.11%

5,461

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	5,461	$35,387	100.0%	Defined

JPMORGAN CHASE & CO

$31,855

0.10%

4,916

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	4,916	$31,855	100.0%	Defined

MORGAN STANLEY

$29,696

0.09%

4,583

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	13	$84	0.3%	Defined
MORGAN STANLEY & CO. LLC	3,108	$20,139	67.8%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	1,109	$7,186	24.2%	Defined
MORGAN STANLEY SMITH BARNEY LLC	3	$19	0.1%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	350	$2,268	7.6%	Defined

Vanguard Global Advisers, LLC

$25,686

0.08%

3,964

BNP PARIBAS ARBITRAGE, SA

$19,686

0.06%

3,038

BARCLAYS PLC

$19,335

0.06%

2,984

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	2,131	$13,808	71.4%	Defined
BARCLAYS CAPITAL INC.	853	$5,527	28.6%	Defined

STRS OHIO

$14,904

0.05%

2,300

Tower Research Capital LLC (TRC)

$13,180

0.04%

2,034

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	2,034	$13,180	100.0%	Defined

Cornerstone National Bank & Trust Co

$9,253

0.03%

1,428

Legal & General Group Plc

$7,523

0.02%

1,161

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	1,161	$7,523	100.0%	Defined

Ameritas Investment Partners, Inc.

$6,972

0.02%

1,076

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	1,076	$6,972	100.0%	Other

Measured Wealth Private Client Group, LLC

$6,480

0.02%

1,000

Russell Investments Group, Ltd.

$6,279

0.02%

969

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	969	$6,279	100.0%	Defined

SIMPLEX TRADING, LLC

$5,145

0.02%

794

Trifecta Capital Advisors, LLC

$4,626

0.01%

714

NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO

$3,700

0.01%

571

ROYAL BANK OF CANADA

$3,220

0.01%

497

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	496	$3,214	99.8%	Defined
Held directly	1	$6	0.2%	Sole

FMR LLC

$2,358

0.01%

364

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	80	$518	22.0%	Defined
STRATEGIC ADVISERS LLC	284	$1,840	78.0%	Defined

Silver Grove Financial Group, Inc.

$1,296

0.00%

200

SALEM INVESTMENT COUNSELORS INC

$648

0.00%

100

WHITTIER TRUST CO

$648

0.00%

100

Geneos Wealth Management Inc.

$596

0.00%

Sterling Capital Management LLC

$272

0.00%

SBI Securities Co., Ltd.

$19

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
683 Capital Partners, LP	137,000	$1,402,880	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	74,192	$759,726	100.0%	Sole

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	64,759	$663,132	100.0%	Other

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	60,953	$624,158	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	18,848	$193,003	67.3%	Defined
Jane Street Global Trading, LLC	9,150	$93,696	32.7%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Osaic Advisory Services, LLC	357	$3,655	100.0%	Defined

Key facts CIK 921114 CUSIP 04216R102 13F (30d) 51 filings 51 filers Visit website Investor relations