Armata Pharmaceuticals, Inc. (ARMP) has 20 known insider and institutional holders on record. The largest holder is ELAN CORP PLC with 11,626,282 shares. Other notable holders include Innoviva Strategic Opportunities LLC and BIOGEN IDEC INC.
Over the last 12 months, insiders have made 16 transactions in ARMP stock — 9 buys (valued at $10.08M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
ARMP Insider Ownership
Top Holder
ELAN CORP PLC
11,626,282 shares
Buys (12 mo)
9
$10.08M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Elan Corp Plc |
10 Percent Owner |
11,626,282 |
2005-01-10 |
|
| 2 |
Innoviva Strategic Opportunities Llc |
Director |
2,692,604 |
2022-04-01 |
|
| 3 |
Biogen Idec Inc |
10 Percent Owner |
2,170,410 |
2006-11-09 |
|
| 4 |
Innoviva, Inc. |
Director |
1,807,396 |
2022-02-11 |
|
| 5 |
Delta Dental Plan Of Michigan, Inc. |
10 Percent Owner |
1,265,802 |
2019-05-17 |
|
| 6 |
Kirk Randal J |
10 Percent Owner |
734,696 |
2016-12-29 |
|
| 7 |
Marxe Austin W & Greenhouse David M |
10 Percent Owner |
675,000 |
2009-10-13 |
|
| 8 |
Delta Dental Of Wisconsin, Inc. |
10 Percent Owner |
478,681 |
2019-05-20 |
|
| 9 |
Varnum Brian |
President and CEO |
240,000 |
2022-04-15 |
|
| 10 |
Salka Michael Scott |
Chief Executive Officer |
214,214 |
2017-04-04 |
|
| 11 |
Birx Deborah |
Chief Executive Officer |
212,458 |
2026-03-17 |
|
| 12 |
House David Duane |
SVP, Finance, and Pfo |
109,885 |
2026-03-11 |
|
| 13 |
Bilinsky Igor |
Chief Operating Officer |
87,161 |
2017-06-01 |
|
| 14 |
Carter Barrie J Phd |
Executive Vice President |
83,766 |
2008-05-19 |
|
| 15 |
Simpson Todd E |
VP, CFO, Treas. & Sec. |
75,000 |
2005-05-26 |
|
| 16 |
Hawley Roger |
Director |
60,000 |
2009-06-02 |
|
| 17 |
Levy Nelson L |
Director |
60,000 |
2009-06-02 |
|
| 18 |
Davie Joseph Md Phd |
Director |
60,000 |
2009-06-02 |
|
| 19 |
Martin Steven Robert |
Chief Financial Officer |
56,000 |
2021-03-26 |
|
| 20 |
Morris Duane Alfred |
VP of Operations |
41,000 |
2022-04-15 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-14 |
Kyme Pierre |
Chief Business Officer |
Tax Withholding of RSU |
1,030 |
$10.54 |
$10.86K |
| 2026-03-14 |
Birx Deborah |
Chief Executive Officer |
Tax Withholding of RSU |
4,919 |
$10.54 |
$51.85K |
| 2026-03-09 |
House David Duane |
SVP, Finance, and Pfo |
RSU Award |
109,885 |
$11.61 |
$1.28M |
| 2026-03-09 |
Kyme Pierre |
Chief Business Officer |
RSU Award |
183,142 |
$11.61 |
$2.13M |
| 2026-03-09 |
Birx Deborah |
Chief Executive Officer |
RSU Award |
421,226 |
$11.61 |
$4.89M |
| 2026-03-09 |
Peterson Todd C. |
Director |
RSU Award |
25,640 |
$11.61 |
$297.68K |
| 2026-03-09 |
Kramer Robin |
Director |
RSU Award |
25,640 |
$11.61 |
$297.68K |
| 2026-03-09 |
Schlesinger Sarah J. |
Director |
RSU Award |
25,640 |
$11.61 |
$297.68K |
| 2026-03-09 |
Odysseas Kostas D |
Director |
RSU Award |
25,640 |
$11.61 |
$297.68K |
| 2026-03-09 |
Haimovitz Jules |
Director |
RSU Award |
25,640 |
$11.61 |
$297.68K |
| 2026-03-09 |
Patti Joseph M |
Director |
RSU Award |
25,640 |
$11.61 |
$297.68K |
| 2025-07-10 |
Birx Deborah |
Chief Executive Officer |
Tax Withholding of RSU |
13,637 |
$2.27 |
$30.96K |
| 2025-03-14 |
Kyme Pierre |
Chief Business Officer |
Tax Withholding of RSU |
1,027 |
$1.95 |
$2K |
| 2024-06-19 |
Kyme Pierre |
Chief Business Officer |
Unknown |
50,000 |
$5.11 |
$255.5K |
| 2025-03-14 |
Birx Deborah |
Chief Executive Officer |
Tax Withholding of RSU |
6,061 |
$1.95 |
$11.82K |
| 2024-07-10 |
Birx Deborah |
Chief Executive Officer |
Tax Withholding of RSU |
22,925 |
$2.68 |
$61.44K |
