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Armata Pharmaceuticals (ARMP) Stock Chart & Stock Price History

Armata Pharmaceuticals logo
$4.18 +0.08 (+1.95%)
Closing price 09/18/2026 04:10 PM Eastern
Extended Trading
$4.17 -0.01 (-0.26%)
As of 09/18/2026 07:50 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Armata Pharmaceuticals Stock Price Performance

The Armata Pharmaceuticals (ARMP) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 36.16%, with a year-to-date return of -33.44%. In the past month, the stock has decreased 17.55%, reflecting recent market activity.

As of the latest close, Armata Pharmaceuticals traded at $4.18 with a market cap of $155.41 million and volume of 160,588 shares.

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5 Day
Performance
-24.68%
1 Month
Performance
-17.55%
3 Month
Performance
-40.96%
Year-To-Date
Performance
-33.44%
1 Year
Performance
+36.16%

ARMP Stock Chart for Saturday, September, 19, 2026

Armata Pharmaceuticals Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
09/18/2026$4.10$4.18
+1.95%
$4.40$4.00160,588 shs$155.41 million
09/17/2026$4.07$4.10
+0.74%
$4.32$4.09253,293 shs$152.44 million
09/16/2026$4.40$4.07
-7.50%
$4.44$3.99307,016 shs$151.32 million
09/15/2026$5.55$4.40
-20.72%
$5.35$4.23646,186 shs$163.59 million
09/14/2026$5.38$5.55
+3.16%
$6.64$4.734.72 million shs$206.35 million
09/11/2026$5.23$5.38
+2.87%
$5.55$5.2643,604 shs$200.03 million
09/10/2026$5.41$5.23
-3.33%
$5.74$5.12115,379 shs$194.45 million
09/09/2026$5.82$5.41
-7.04%
$5.79$5.4017,886 shs$201.14 million
09/08/2026$5.84$5.82
-0.34%
$5.88$5.5947,375 shs$216.39 million
09/07/2026$5.84$5.84$5.87$5.4848,030 shs$217.13 million
09/04/2026$5.52$5.84
+5.80%
$5.87$5.4848,030 shs$217.13 million
09/03/2026$5.53$5.52
-0.18%
$5.62$5.2049,268 shs$205.23 million
09/02/2026$5.28$5.53
+4.73%
$5.62$5.2770,063 shs$205.61 million
09/01/2026$5.51$5.28
-4.17%
$5.68$5.1946,464 shs$196.31 million
08/31/2026$5.37$5.51
+2.61%
$5.52$5.1851,474 shs$204.86 million
08/28/2026$5.43$5.37
-1.10%
$5.45$4.9949,659 shs$199.66 million
08/27/2026$5.45$5.43
-0.37%
$5.47$4.73270,463 shs$201.89 million
08/26/2026$5.56$5.45
-1.98%
$5.59$5.3062,213 shs$202.63 million
08/25/2026$5.17$5.56
+7.54%
$5.70$5.2393,984 shs$206.72 million
08/24/2026$5.10$5.17
+1.37%
$5.26$4.8667,744 shs$192.22 million
08/21/2026$4.42$5.10
+15.38%
$5.10$4.42111,348 shs$189.62 million
08/20/2026$5.07$4.42
-12.82%
$5.17$4.12222,124 shs$164.34 million
08/19/2026$4.56$5.07
+11.18%
$5.10$4.61104,711 shs$186.12 million
08/18/2026$4.48$4.56
+1.79%
$4.67$4.4435,952 shs$167.40 million

This page (NYSEAMERICAN:ARMP) was last updated on 9/18/2026 by MarketBeat.com Staff.
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