Armata Pharmaceuticals ARMP Institutional Ownership

NYSE ARMP

$3.67 +0.08 (+2.23%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

54 Institutions

Increased 37 68.5%

Unchanged 14 25.9%

Reduced 3 5.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

13.64%

▲+2.89 pp QoQ

Shares Held by Institutions

5.01Mn

of 36.75Mn outstanding

▲+44.68% QoQ

Shares Outstanding

36.75Mn

31.74Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+9 vs prior quarter

Net Shares Added (QoQ)

+1.55Mn

accumulated since last quarter

Value of Holdings

$18.39Mn

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

Quarter ending 30 Jun, 2026

Armata Pharmaceuticals, Inc. (NYSE:ARMP) has 54 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 13.6% of outstanding shares in June 2026, up from 10.8% in March 2026.
They increased total shares held in Armata Pharmaceuticals by 44.68% from the prior quarter, while the number of investors in ARMP increased 86.21% year over year.
Of these 54 funds, 37 grew their exposure to Armata Pharmaceuticals, 3 cut back, and 14 maintained positions.
The aggregate institutional position in Armata Pharmaceuticals amounted to 5.01Mn shares as of June 2026, up by 1.55Mn shares quarter on quarter, and up 4.28Mn shares year over year.
As of June 30, 2026, Madison Asset Management, LLC held the largest stake in Armata Pharmaceuticals with 2.11Mn shares, accounting for 5.73% of total shares outstanding.
The largest buyers of Armata Pharmaceuticals for the quarter ending June 2026 were BlackRock, Inc. (494.94K), MILLENNIUM MANAGEMENT LLC (212.51K), GEODE CAPITAL MANAGEMENT, LLC (156.0K), VANGUARD CAPITAL MANAGEMENT LLC (121.94K), Dauntless Investment Group, LLC (113.31K).
Leading sellers of Armata Pharmaceuticals shares for the quarter ending June 2026 were EDGEWOOD MANAGEMENT LLC (20.0K), Madison Asset Management, LLC (500), Bank Of America Corp /De/ (409).
Per Business Quant data, the top 10 holders of Armata Pharmaceuticals for the quarter ending June 2026 are Madison Asset Management, LLC (2.11Mn), BlackRock, Inc. (559.99K), VANGUARD CAPITAL MANAGEMENT LLC (487.97K), MILLENNIUM MANAGEMENT LLC (470.5K), GEODE CAPITAL MANAGEMENT, LLC (270.55K), Dauntless Investment Group, LLC (203.89K), State Street Corp (129.6K), Northern Trust Corp (89.79K), VANGUARD PORTFOLIO MANAGEMENT LLC (81.35K), EDGEWOOD MANAGEMENT LLC (80.0K).

Form 13F Holdings

54 Institutional Holders

Report period 30 Jun, 2026

Total shares held 5.01Mn

Of outstanding 13.64%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Madison Asset Management, LLC	0001299351	2,107,175	5.73%	▼500	-0.02%	$13.65Mn
2	BlackRock, Inc.	0002012383	559,986	1.52%	▲494,936	+760.85%	$3.63Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	487,968	1.33%	▲121,940	+33.31%	$3.16Mn
4	MILLENNIUM MANAGEMENT LLC	0001273087	470,500	1.28%	▲212,508	+82.37%	$3.05Mn
5	GEODE CAPITAL MANAGEMENT, LLC	0001214717	270,550	0.74%	▲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	0.22%	▲11,631	+17.14%	$515.13K
12	Grey Ledge Advisors, LLC	0001660694	50,000	0.14%	▲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
17	Sixth Street Partners Management Company, L.P.	0001812095	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

Showing 1 to 20 of 54 holders