Arm Holdings plc American Depositary Shares (ARM) has 20 known insider and institutional holders on record. The largest holder is SOFTBANK GROUP CORP. with 922,733,999 shares. Other notable holders include YOST LARRY D and Reinhardt Carsten J.
Over the last 12 months, insiders have made 17 transactions in ARM stock — 0 buys (valued at RSU Award) and 3 sells (valued at $5.9M). Insider selling has exceeded buying during this period.
ARM Insider Ownership
Top Holder
SOFTBANK GROUP CORP.
922,733,999 shares
Buys (12 mo)
0
$0.00 value
Sells (12 mo)
3
$5.9M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Softbank Group Corp. |
10 Percent Owner |
922,733,999 |
2026-03-18 |
|
| 2 |
Yost Larry D |
Chairman of the Board and CEO |
324,513 |
2004-06-16 |
|
| 3 |
Reinhardt Carsten J |
SVP and Chief Operating Office |
320,437 |
2011-01-20 |
|
| 4 |
Haas Rene A. |
Chief Executive Officer |
290,965 |
2026-03-27 |
|
| 5 |
Donlon James D Iii |
Executive Vice President |
196,988 |
2009-12-02 |
|
| 6 |
Child Jason |
Chief Financial Officer |
174,706 |
2026-03-27 |
|
| 7 |
Lehmann Mary A |
Sr. VP, Treasurer |
170,848 |
2011-02-01 |
|
| 8 |
Orourke Terrence E |
President & COO |
76,514 |
2004-01-02 |
|
| 9 |
Soderstrom S Carl Jr |
Sr. VP and CFO |
68,078 |
2004-12-15 |
|
| 10 |
Bowes Timothy Earl Joseph |
VP&pres, Industrial |
56,425 |
2011-01-20 |
|
| 11 |
Mejaly Joseph Leonard |
VP&pres, Aftermarket &trailer |
46,705 |
2011-01-20 |
|
| 12 |
Wacaser H H |
SVP and President, Et Group |
33,772 |
2007-03-14 |
|
| 13 |
De La Riva Juan L |
Sr. VP and President, Lvs |
28,207 |
2006-06-16 |
|
| 14 |
Sachdev Rakesh |
Senior VP, Corporate Strategy |
25,823 |
2008-11-06 |
|
| 15 |
Gosnel Thomas A |
Sr. VP and President, Cvs |
24,339 |
2006-06-16 |
|
| 16 |
Wilkinson Bonnie |
Vice President and Secretary |
23,154 |
2008-01-02 |
|
| 17 |
Brooks Rhonda L |
Director |
20,995 |
2011-02-16 |
|
| 18 |
Shumar Debra L |
Sr. VP, Continuous Improvement |
19,320 |
2004-03-17 |
|
| 19 |
Daniel William K |
Senior VP and President, Lva |
15,773 |
2006-03-14 |
|
| 20 |
Rothmeier Steven G |
Director |
15,607 |
2011-02-16 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-26 |
Haas Rene A. |
Chief Executive Officer |
Informative Sell |
5,344 |
$160.41 |
$857.23K |
| 2026-03-25 |
Haas Rene A. |
Chief Executive Officer |
Informative Sell |
11,749 |
$160.22 |
$1.88M |
| 2026-03-25 |
Child Jason |
Chief Financial Officer |
Informative Sell |
21,280 |
$148.37 |
$3.16M |
| 2026-03-18 |
Bartels Laura Kathleen |
Chief Accounting Officer |
Unknown |
2,308 |
- |
- |
| 2026-03-18 |
Grisenthwaite Richard Roy |
Chief Architect |
Unknown |
4,352 |
- |
- |
| 2026-03-18 |
Collins Spencer |
Chief Legal Officer |
Unknown |
9,216 |
- |
- |
| 2026-03-18 |
Haas Rene A. |
Chief Executive Officer |
Unknown |
- |
- |
- |
| 2026-03-18 |
Abbey William |
Chief Commercial Officer |
Unknown |
4,706 |
- |
- |
| 2026-03-18 |
Sine Jeffrey |
Director |
Unknown |
2,141 |
- |
- |
| 2026-03-18 |
Schooler Rosemary |
Director |
Unknown |
2,141 |
- |
- |
| 2026-03-18 |
Child Jason |
Chief Financial Officer |
Unknown |
10,843 |
- |
- |
| 2026-03-18 |
Sohn Young |
Director |
Unknown |
2,141 |
- |
- |
| 2026-03-18 |
Dykstra Karen E |
Director |
Unknown |
2,141 |
- |
- |
| 2026-03-18 |
Jacobs Paul E |
Director |
Unknown |
2,141 |
- |
- |
| 2026-03-18 |
Softbank Group Corp. |
10 Percent Owner |
Unknown |
- |
- |
- |
| 2026-03-18 |
Masayoshi Son |
Director |
Unknown |
- |
- |
- |
| 2026-03-18 |
Fisher Ronald D |
Director |
Unknown |
2,141 |
- |
- |
