Armata Pharmaceuticals ARMP Institutional Ownership

NYSE ARMP

$3.20 +0.14 (+4.52%)

As of: Oct 22, 2026 · 10:00 AM EDT

Institutions by Trading Activity

53 Institutions

Increased 36 67.9%

Unchanged 14 26.4%

Reduced 3 5.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

13.41%

▲+2.70 pp QoQ

Shares Held by Institutions

4.98Mn

of 37.15Mn outstanding

▲+26.87% QoQ

Shares Outstanding

37.15Mn

32.16Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+8 vs prior quarter

Net Shares Added (QoQ)

+1.06Mn

accumulated since last quarter

Value of Holdings

$15.75Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 10, 2026

Armata Pharmaceuticals, Inc. (NYSE:ARMP) appeared in the 13F filings of 53 institutional investors for the quarter ended June 30, 2026.

Together they owned 13.41% of the outstanding stock in Q2 2026, up from 10.72% a quarter earlier.
Total shares held in Armata Pharmaceuticals rose 26.87% versus Q1 2026, while the number of holders rose 89.29% versus Q2 2025.
Looking at the 53 holders of ARMP individually, 36 added to their positions, 3 reduced their stakes and 14 left their positions unchanged.
In total, institutional investors held 4.98Mn shares of Armata Pharmaceuticals at the end of Q2 2026, up 1.06Mn from the prior quarter and up 4.25Mn from a year earlier.
Madison Asset Management, LLC led 13F holders of ARMP with 2.11Mn shares as of June 30, 2026, or 5.67% of shares outstanding.
Among existing holders, the largest additions to Armata Pharmaceuticals in Q2 2026 came from BlackRock, Inc. (+494.94K shares), Millennium Management LLC (+212.51K shares), Geode Capital Management, LLC (+156K shares), Vanguard Capital Management LLC (+121.94K shares) and Dauntless Investment Group, LLC (+113.31K shares).
On the other side, among holders that kept a position in Armata Pharmaceuticals, the largest reductions in Q2 2026 came from Edgewood Management LLC (-20K shares), Madison Asset Management, LLC (-500 shares) and Bank of America Corp (-409 shares).
Armata Pharmaceuticals' 10 largest institutional shareholders as of Q2 2026 were Madison Asset Management, LLC (2.11Mn shares), BlackRock, Inc. (559.99K shares), Vanguard Capital Management LLC (487.97K shares), Millennium Management LLC (470.5K shares), Geode Capital Management, LLC (270.55K shares), Dauntless Investment Group, LLC (203.89K shares), State Street Corp (129.6K shares), Northern Trust Corp (89.79K shares), Vanguard Portfolio Management LLC (81.35K shares) and Edgewood Management LLC (80K shares), per Business Quant data.

Form 13F Holdings

53 Institutional Holders

Report period 30 Jun, 2026

Total shares held 4.98Mn

Of outstanding 13.41%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Madison Asset Management, LLC	0001299351	2,107,175	5.67%	▼500	-0.02%	$13.65Mn
2	BlackRock, Inc.	0002012383	559,986	1.51%	▲494,936	+760.85%	$3.63Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	487,968	1.31%	▲121,940	+33.31%	$3.16Mn
4	MILLENNIUM MANAGEMENT LLC	0001273087	470,500	1.27%	▲212,508	+82.37%	$3.05Mn
5	GEODE CAPITAL MANAGEMENT, LLC	0001214717	270,550	0.73%	▲155,995	+136.17%	$1.75Mn
6	Dauntless Investment Group, LLC	0002044285	203,891	0.55%	▲113,311	+125.09%	$1.32Mn
7	State Street Corp	0000093751	129,600	0.35%	▲78,800	+155.12%	$839.81K
8	Northern Trust Corp	0000073124	89,791	0.24%	▲65,145	+264.32%	$581.85K
9	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	81,354	0.22%	▲81,354	0.00%	$527.17K
10	EDGEWOOD MANAGEMENT LLC	0000860561	80,000	0.22%	▼20,000	-20.00%	$518.40K
11	VANGUARD FIDUCIARY TRUST CO	0000933478	79,495	0.21%	▲11,631	+17.14%	$515.13K
12	Grey Ledge Advisors, LLC	0001660694	50,000	0.13%	▲20,000	+66.67%	$324.00K
13	RENAISSANCE TECHNOLOGIES LLC	0001037389	48,318	0.13%	▲9,822	+25.51%	$313.10K
14	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	44,682	0.12%	0	0.00%	$289.54K
15	SeaCrest Wealth Management, LLC	0001728121	41,524	0.11%	0	0.00%	$269.08K
16	Bank of New York Mellon Corp	0001390777	29,749	0.08%	▲29,749	0.00%	$192.77K
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	28,857	0.08%	▲28,857	0.00%	$186.99K
18	Hudson Bay Capital Management LP	0001393825	17,584	0.05%	0	0.00%	$113.94K
19	Nuveen, LLC	0001871926	15,905	0.04%	▲15,905	0.00%	$103.06K
20	NEW YORK STATE COMMON RETIREMENT FUND	0000810265	15,400	0.04%	▲15,400	0.00%	$99.79K

Showing 1 to 20 of 53 holders