Stem, Inc. (STEM) has 20 known insider and institutional holders on record. The largest holder is Scheyer Eric J with 9,589,626 shares. Other notable holders include Star Peak Sponsor LLC and Litowitz Alec N.
Over the last 12 months, insiders have made 77 transactions in STEM stock — 29 buys (valued at $123.92K) and 18 sells (valued at $376.95K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
STEM Insider Ownership
Top Holder
Scheyer Eric J
9,589,626 shares
Buys (12 mo)
29
$123.92K value
Sells (12 mo)
18
$376.95K value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Scheyer Eric J |
10 Percent Owner, Officer: Chief Executive Officer |
9,589,626 |
2020-10-05 |
|
| 2 |
Star Peak Sponsor Llc |
10 Percent Owner |
9,589,626 |
2020-10-05 |
|
| 3 |
Litowitz Alec N |
10 Percent Owner |
9,589,626 |
2020-10-05 |
|
| 4 |
Millennium Management Llc |
10 Percent Owner |
2,851,204 |
2004-01-16 |
|
| 5 |
Massey Ian J |
Chief Executive Officer |
2,378,460 |
2016-04-18 |
|
| 6 |
Mcglynn Martin M |
President & CEO |
2,230,297 |
2016-01-12 |
|
| 7 |
Carrington John Eugene |
CEO and Director |
1,094,878 |
2024-05-28 |
|
| 8 |
Schaefer Robert |
President, Transformational |
716,110 |
2024-03-20 |
|
| 9 |
Tsukamoto Ann |
EVP, Research and Development |
706,511 |
2015-01-28 |
|
| 10 |
Bush William John |
Chief Financial Officer |
573,380 |
2024-05-28 |
|
| 11 |
Craig Stewart |
SVP, Development & Operations |
405,981 |
2014-01-29 |
|
| 12 |
Salinas Eliseo Oreste |
EVP and Head of R&d |
390,000 |
2013-06-17 |
|
| 13 |
Schwartz John J |
Director |
334,673 |
2016-01-05 |
|
| 14 |
Triplett Mark William |
Chief Operating Officer |
323,946 |
2022-04-14 |
|
| 15 |
Hole Spencer Doran |
Chief Financial Officer & EVP |
277,778 |
2024-09-03 |
|
| 16 |
Levy Ricardo B |
Director |
260,033 |
2016-01-05 |
|
| 17 |
Russo Alan |
Chief Revenue Officer |
229,749 |
2024-05-28 |
|
| 18 |
Patel Prakesh |
Chief Strategy Officer |
228,947 |
2024-05-28 |
|
| 19 |
Albert Hofeldt |
Chief Technology Officer |
199,157 |
2025-02-21 |
|
| 20 |
Homenock Kim |
Chief People Officer |
184,568 |
2025-02-21 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-11 |
Tappin Matthew |
President, Software Products |
Informative Sell |
402 |
$10.83 |
$4.35K |
| 2026-03-10 |
Narayanan Arun |
Chief Executive Officer |
Informative Sell |
5,145 |
$11.12 |
$57.21K |
| 2026-03-07 |
Narayanan Arun |
Chief Executive Officer |
Option Exercise (Sell) |
5,625 |
- |
- |
| 2026-03-10 |
Tappin Matthew |
President, Software Products |
Informative Sell |
655 |
$11.12 |
$7.28K |
| 2026-03-07 |
Tappin Matthew |
President, Software Products |
Option Exercise (Sell) |
1,458 |
- |
- |
| 2026-03-10 |
Carlson Michael James |
President, Managed Services |
Informative Sell |
2,079 |
$11.12 |
$23.12K |
| 2026-03-07 |
Carlson Michael James |
President, Managed Services |
Option Exercise (Sell) |
3,541 |
- |
- |
| 2026-03-10 |
Laureles Saul R. |
Chief Legal Officer |
Informative Sell |
942 |
$11.12 |
$10.48K |
| 2026-03-07 |
Laureles Saul R. |
Chief Legal Officer |
Option Exercise (Sell) |
2,916 |
- |
- |
| 2026-03-04 |
Tappin Matthew |
President, Software Products |
Informative Sell |
185 |
$10.00 |
$1.85K |
| 2026-03-03 |
Tappin Matthew |
President, Software Products |
Informative Sell |
300 |
$9.67 |
$2.9K |
| 2026-03-03 |
Laureles Saul R. |
Chief Legal Officer |
Informative Sell |
292 |
$9.67 |
$2.82K |
| 2026-02-26 |
Musfeldt Brian |
Chief Financial Officer |
RSU Award |
17,200 |
- |
- |
| 2026-02-26 |
Narayanan Arun |
Chief Executive Officer |
RSU Award |
38,400 |
- |
- |
| 2025-01-27 |
Narayanan Arun |
Chief Executive Officer |
RSU Award |
16,250 |
- |
- |
| 2026-03-01 |
Tappin Matthew |
President, Software Products |
Option Exercise (Sell) |
670 |
- |
- |
| 2026-02-26 |
Tappin Matthew |
President, Software Products |
RSU Award |
17,200 |
- |
- |
| 2026-02-26 |
Carlson Michael James |
President, Managed Services |
RSU Award |
17,200 |
- |
- |
| 2026-03-01 |
Laureles Saul R. |
Chief Legal Officer |
Option Exercise (Sell) |
904 |
- |
- |
| 2026-02-26 |
Laureles Saul R. |
Chief Legal Officer |
RSU Award |
12,000 |
- |
- |
| 2026-02-20 |
Tappin Matthew |
President, Software Products |
Informative Sell |
366 |
$11.40 |
$4.17K |
| 2026-02-19 |
Tappin Matthew |
President, Software Products |
Tax Withholding of RSU |
522 |
$11.30 |
$5.9K |
| 2026-02-19 |
Carlson Michael James |
President, Managed Services |
Tax Withholding of RSU |
730 |
$11.30 |
$8.25K |
| 2026-02-19 |
Laureles Saul R. |
Chief Legal Officer |
Tax Withholding of RSU |
536 |
$11.30 |
$6.06K |
| 2026-02-15 |
Tappin Matthew |
President, Software Products |
Option Exercise (Sell) |
1,253 |
- |
- |
