Armata Pharmaceuticals, Inc. (ARMP) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

36,047,297Shares Outstanding

191,681Shares held by institutions

$1,562,200Value of institutional holdings

3.46%Institutional ownership %

64.89%Shares Changed QoQ

36No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Armata Pharmaceuticals, Inc. (NYSE:ARMP) includes 36 filers as of the latest reporting cycle ending December 2025.

The percentage of Armata Pharmaceuticals owned by institutions changed from 2.1% in September 2025 to 3.5% in December 2025, marking a slight up trend.
In percentage terms, this reflects as a holdings change of 64.89% quarter on quarter, and an increase of 44.00% year over year.
The latest 13F cycle for Armata Pharmaceuticals reveals that of 36 total investors, 23 funds grew their exposure, whereas 1 reduced theirs and 12 made no changes.
Collectively, institutional investors increased their stake in Armata Pharmaceuticals to 1.25Mn shares as of December 2025, a change that is up by 490.98K shares quarter on quarter and down 142.65K shares year over year.
As of December 31, 2025, VANGUARD GROUP INC held Armata Pharmaceuticals's largest shareholding position with over 357.65K shares, representing 0.99% of total outstanding shares.
Among the most significant buyers of Armata Pharmaceuticals during December 2025 were 683 Capital Management, LLC (139.86K), VANGUARD GROUP INC (60.61K), BlackRock, Inc. (46.10K), GOLDMAN SACHS GROUP INC (45.16K), OMERS ADMINISTRATION Corp (28.12K).
Leading sellers of Armata Pharmaceuticals stock in December 2025 included OSAIC HOLDINGS, INC. (100).
The top 10 institutional holders of Armata Pharmaceuticals for the quarter ending December 2025 included VANGUARD GROUP INC (357.65K), 683 Capital Management, LLC (139.86K), GEODE CAPITAL MANAGEMENT, LLC (109.89K), EDGEWOOD MANAGEMENT LLC (100.00K), BlackRock, Inc. (72.76K), RENAISSANCE TECHNOLOGIES LLC (68.50K), STATE STREET CORP (50.80K), GOLDMAN SACHS GROUP INC (45.16K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (44.68K), SeaCrest Wealth Management, LLC (40.99K).

36 Institutional Holders

191,681 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	357,649	60,611	20.41%	$2,246,036.00
683 Capital Management, LLC	31 Dec, 2025	139,860	139,860	0.00%	$878,321.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	109,888	5,342	5.11%	$690,280.00
EDGEWOOD MANAGEMENT LLC	31 Dec, 2025	100,000	0	0.00%	$628,000.00
BlackRock, Inc.	31 Dec, 2025	72,764	46,098	172.87%	$456,958.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	68,496	27,200	65.87%	$430,155.00
STATE STREET CORP	31 Dec, 2025	50,800	10,500	26.05%	$319,024.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	45,163	45,163	0.00%	$283,624.00
BRIDGEWAY CAPITAL MANAGEMENT, LLC	31 Dec, 2025	44,682	0	0.00%	$280,603.00
SeaCrest Wealth Management, LLC	31 Dec, 2025	40,988	6,034	17.26%	$273,800.00
Grey Ledge Advisors, LLC	31 Dec, 2025	30,000	0	0.00%	$188,400.00
OMERS ADMINISTRATION Corp	31 Dec, 2025	28,125	28,125	0.00%	$176,625.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	26,088	26,088	0.00%	$163,833.00
NORTHERN TRUST CORP	31 Dec, 2025	24,646	5,373	27.88%	$154,777.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	24,360	24,360	0.00%	$152,981.00
Qube Research & Technologies Ltd	31 Dec, 2025	23,356	23,356	0.00%	$146,676.00
JANE STREET GROUP, LLC	31 Dec, 2025	17,153	17,153	0.00%	$107,721.00
CAPTRUST FINANCIAL ADVISORS	31 Dec, 2025	13,140	0	0.00%	$82,519.00
CITADEL ADVISORS LLC	31 Dec, 2025	10,786	10,786	0.00%	$67,736.00
Dauntless Investment Group, LLC	31 Dec, 2025	6,131	6,131	0.00%	$38,503.00

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