How to Buy Armata Pharmaceuticals, Inc. Common Stock (ARMP) Stock

Where to buy ARMP

13 brokers in our matrix offer ARMP. Verify availability and current fees with each broker before trading.

Broker	Commission	Fractional	Extended	Overnight	Options	OTC access
Charles Schwab (thinkorswim)Review	$0	Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once		~1,130	$0.65	Most (3/5)
E*TRADE (Morgan Stanley)Review	$0 listed			~20	$0.65	Most (4/5)
FidelityReview	$0	Stocks by the Slice, 7,000+ stocks/ETFs, from $1			$0.65	Partial (2+0)
FirstradeReview	$0	~4,000+ tickers, ≥ $5		~1,200	$0	Most (4/5)
Interactive BrokersReview	$0 (Lite) / per-share (Pro)			~10,000	per-contract pricing	Full
Merrill EdgeReview	$0				$0.65	Most (3/5)
MoomooReview	$0				$0	Limited only
Public.comReview	$0				rebate model	Limited only
RobinhoodReview	$0	≥ $1 stocks, market cap ≥ $25M		~1,134	$0	None
SoFi Active InvestingReview	$0				$0	Partial (1+2)
tastytradeReview	$0 stocks				$1.00 open, $0 close (capped at $10 per leg)	Limited only
TradeStationReview	$0 listed				$0.50 / $0.60	Most (4/5)
WebullReview	$0				$0	Limited only

24-Hour / Overnight trading

ARMP may be eligible for overnight trading via Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each broker maintains its own eligibility list — confirm before placing an order.

About Armata Pharmaceuticals, Inc. Common Stock

Armata Pharmaceuticals Inc is a late clinical-stage biotechnology company focused on the development of high-purity and potent, pathogen-specific bacteriophage therapeutics for the treatment of antibiotic-resistant and difficult-to-treat bacterial infections using proprietary bacteriophage-based technology. It has completed three Phase 2 clinical trials to date. The Company operates and manages its business as one reportable operating segment, which is the business of developing pathogen-specific bacteriophage therapeutics for the treatment of antibiotic-resistant and difficult-to-treat acute and chronic bacterial infections using its proprietary bacteriophage-based technology.

Sector

BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)

Employees

61

Headquarters

LOS ANGELES, CA

Listed

1994-05-27

Market cap

$298.09M

Frequently asked

Where can I buy Armata Pharmaceuticals, Inc. Common Stock (ARMP)?

ARMP is offered by 13 brokers in our matrix, including Charles Schwab (thinkorswim), E*TRADE (Morgan Stanley), Fidelity, Firstrade, Interactive Brokers. Compare commissions, fractional eligibility, and overnight availability in the broker matrix above.

Can I buy ARMP after hours or overnight?

Yes. ARMP is on the 24-hour eligibility list for Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others. Overnight sessions route through ATSs with wider spreads and limit-orders only.

Does Robinhood offer ARMP?

Yes. Robinhood offers ARMP as a regular exchange-listed security.

Does Fidelity offer ARMP?

Yes. Fidelity offers ARMP as a regular exchange-listed security.

Does Webull offer ARMP?

Yes. Webull offers ARMP as a regular exchange-listed security.

Is ARMP optionable?

Yes. ARMP has listed options contracts. Per-contract pricing varies by broker — see the Options column in the matrix.

Is there a tokenized version of ARMP?

Not in our current dataset. The tokenized stock universe (Kraken xStocks, Binance Alpha/Ondo, Robinhood EU, Hyperliquid HIP-3) is expanding quickly — we refresh quarterly.

Can I buy a fractional share of ARMP?

Yes. Multiple brokers in the matrix support fractional shares for ARMP — see the Fractional column above for per-broker eligibility and minimums.