Quick Takeaways
- STEM - STEM, INC. has 28 insiders with reported activity on this page.
- Net insider value flow over the last year: -$366,998.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 28 Insiders of STEM, INC.
- Symbol
- STEM on NYSE
- Location
- Houston, TX
What Changed
- Buy value: ; sell value: $366,998.
- Net share flow: -70,987.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$366,998.
Buys
$0
Shares: 0
Insiders: 0
Sells
$366,998
Shares: 70,987
Insiders: 5
Net
-$366,998
Shares: -70,987
Insiders: -5
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 10,366 | $0 | $114,190 | -$114,190 |
| 3-6 | 0 | 13,258 | $0 | $229,192 | -$229,192 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 47,363 | $0 | $23,616 | -$23,616 |
STEM, INC. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Anil Tammineedi | Director | $8,320,744 | Mixed | 04 Jun 2025 | ||
| John Eugene Carrington | CEO and Director, Director | $4,339,189 | Mixed | 28 May 2024 | ||
| Robert Schaefer | President, Transformational | $3,453,606 | Mixed | 19 Mar 2024 | ||
| William John Bush | Chief Financial Officer | $2,302,446 | Mixed | 28 May 2024 | ||
| Michael C. Morgan | Director | $1,875,272 | Mixed | 07 Jun 2024 | ||
| Spencer Doran Hole | Chief Financial Officer & EVP | $1,686,666 | Mixed | 03 Sep 2024 | ||
| Alan Russo | Chief Revenue Officer | $1,335,165 | Mixed | 28 May 2024 | ||
| Kim Homenock | Chief People Officer | $1,315,055 | Mixed | 19 Feb 2025 | ||
| Prakesh Patel | Chief Strategy Officer | $1,275,258 | Mixed | 28 May 2024 | ||
| Arun Narayanan | Chief Executive Officer | $1,134,337 | -$57,212 | -4.8% | Mixed | 07 Mar 2026 |
| Saul R. Laureles | Chief Legal Officer | $897,919 | -$13,728 | -1.5% | Mixed | 07 Mar 2026 |
| Mark William Triplett | Chief Operating Officer | $884,373 | Mixed | 12 Apr 2022 | ||
| Michael James Carlson | President, Managed Services | $817,878 | -$23,118 | -2.7% | Mixed | 07 Mar 2026 |
| Adam Daley | Director | $804,141 | Mixed | 04 Jun 2025 | ||
| Larsh Johnson | Chief Technology Officer | $773,706 | Mixed | 12 Mar 2024 | ||
| Hofeldt Albert | Chief Technology Officer | $745,287 | Mixed | 19 Feb 2025 | ||
| Matthew Tappin | President, Software Products | $557,991 | -$200,093 | -26% | Mixed | 11 Mar 2026 |
| Gerard Cunningham | Director | $407,005 | Mixed | 28 Aug 2024 | ||
| Laura D. Tyson | Director | $298,727 | Mixed | 04 Jun 2025 | ||
| Ira M. Birns | Director | $251,366 | Mixed | 04 Jun 2025 | ||
| Jane Woodward | Director | $210,867 | Mixed | 07 Jun 2024 | ||
| Lisa L. Troe | Director | $137,872 | Mixed | 15 Jun 2023 | ||
| Vasudevan Guruswamy | Director | $116,355 | Mixed | 04 Jun 2025 | ||
| Krishna Shivram | Director | $116,355 | Mixed | 04 Jun 2025 | ||
| David S. Buzby | Director | $18,643 | Mixed | 03 Jul 2025 | ||
| Rahul Shukla | Chief Accounting Officer | $0 | -$72,846 | -100% | Mixed | 18 Nov 2025 |
| Cabot Jeffrey T. | Chief Accounting Officer | Mixed | 05 Jan 2026 | |||
| Brian Musfeldt | Chief Financial Officer | Mixed | 26 Feb 2026 |
Top shareholders of STEM, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Anil Tammineedi |
3/4/5
|
Director |
—
mixed-class rows
|
9,048,915
mixed-class rows
|
$8,320,744 | — | 04 Jun 2025 | |
| VANGUARD GROUP INC |
13F
13D/G
|
Company · The Vanguard Group |
4.6%
from 13D/G
|
396,383
|
$5,965,565 | — | 31 Dec 2025 | |
| John Eugene Carrington |
3/4/5
|
CEO and Director, Director |
—
mixed-class rows
|
1,774,388
mixed-class rows
|
$4,339,189 | — | 28 May 2024 | |
| Robert Schaefer |
3/4/5
|
President, Transformational |
—
mixed-class rows
|
1,869,455
mixed-class rows
|
$3,453,606 | — | 19 Mar 2024 | |
| MARSHALL WACE, LLP |
13F
|
Company |
2%
|
167,247
|
$2,517,069 | — | 31 Dec 2025 | |
| William John Bush |
3/4/5
|
Chief Financial Officer |
—
mixed-class rows
|
1,027,917
mixed-class rows
|
$2,302,446 | — | 28 May 2024 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
2.1%
from 13D/G
|
138,177
|
$2,079,564 | — | 31 Dec 2025 | |
| Michael C. Morgan |
3/4/5
|
Director |
—
mixed-class rows
|
1,420,660
mixed-class rows
|
$1,875,272 | — | 07 Jun 2024 | |
| Spencer Doran Hole |
3/4/5
|
Chief Financial Officer & EVP |
—
mixed-class rows
|
1,555,555
mixed-class rows
|
$1,686,666 | — | 03 Sep 2024 | |
| Alan Russo |
3/4/5
|
Chief Revenue Officer |
—
mixed-class rows
|
506,979
mixed-class rows
|
$1,335,165 | — | 28 May 2024 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.1%
|
88,246
|
$1,328,696 | — | 31 Dec 2025 | |
| Kim Homenock |
3/4/5
|
Chief People Officer |
—
mixed-class rows
|
957,420
mixed-class rows
|
$1,315,055 | — | 19 Feb 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
1%
|
85,099
|
$1,280,740 | — | 31 Dec 2025 | |
| Prakesh Patel |
3/4/5
|
Chief Strategy Officer |
—
mixed-class rows
|
474,935
mixed-class rows
|
$1,275,258 | — | 28 May 2024 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
1%
|
83,393
|
$1,255,065 | — | 31 Dec 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.95%
|
79,216
|
$1,192,000 | — | 31 Dec 2025 | |
| Arun Narayanan |
3/4/5
|
Chief Executive Officer |
—
mixed-class rows
|
34,855
mixed-class rows
|
$1,134,337 | -$57,212 | 07 Mar 2026 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.84%
|
69,600
|
$1,047,480 | — | 31 Dec 2025 | |
| Saul R. Laureles |
3/4/5
|
Chief Legal Officer |
—
mixed-class rows
|
47,868
mixed-class rows
|
$897,919 | -$13,728 | 07 Mar 2026 | |
| Mark William Triplett |
3/4/5
|
Chief Operating Officer |
—
class O/S missing
|
323,946
|
$884,373 | — | 12 Apr 2022 | |
| Michael James Carlson |
3/4/5
|
President, Managed Services |
—
mixed-class rows
|
45,674
mixed-class rows
|
$817,878 | -$23,118 | 07 Mar 2026 | |
| Adam Daley |
3/4/5
|
Director |
—
mixed-class rows
|
1,009,769
mixed-class rows
|
$804,141 | — | 04 Jun 2025 | |
| Larsh Johnson |
3/4/5
|
Chief Technology Officer |
—
mixed-class rows
|
348,016
mixed-class rows
|
$773,706 | — | 12 Mar 2024 | |
| Hofeldt Albert |
3/4/5
|
Chief Technology Officer |
—
mixed-class rows
|
662,232
mixed-class rows
|
$745,287 | — | 19 Feb 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.46%
|
38,279
|
$576,099 | — | 31 Dec 2025 | |
| CITIGROUP INC |
13F
|
Company |
0.45%
|
37,223
|
$560,207 | — | 31 Dec 2025 | |
| Matthew Tappin |
3/4/5
|
President, Software Products |
—
mixed-class rows
|
26,982
mixed-class rows
|
$557,991 | -$200,093 | 11 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.44%
|
36,390
|
$547,670 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.43%
|
35,738
|
$537,857 | — | 31 Dec 2025 | |
| Jump Financial, LLC |
13F
|
Company |
0.43%
|
35,500
|
$534,275 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.4%
|
32,967
|
$496,153 | — | 31 Dec 2025 | |
| DnB Asset Management AS |
13F
|
Company |
0.39%
|
32,461
|
$488,538 | — | 31 Dec 2025 | |
| COHEN & STEERS, INC. |
13F
|
Company |
0.38%
|
31,887
|
$480,000 | — | 31 Dec 2025 | |
| HSBC HOLDINGS PLC |
13F
|
Company |
0.34%
|
28,424
|
$434,035 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.33%
|
27,690
|
$416,735 | — | 31 Dec 2025 | |
| Gerard Cunningham |
3/4/5
|
Director |
—
mixed-class rows
|
353,337
mixed-class rows
|
$407,005 | — | 28 Aug 2024 | |
| Susquehanna Portfolio Strategies, LLC |
13F
|
Company |
0.32%
|
26,781
|
$403,054 | — | 31 Dec 2025 | |
| Keyframe Capital Partners, L.P. |
13F
|
Company |
0.31%
|
25,924
|
$390,156 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.31%
|
25,938
|
$390,000 | — | 31 Dec 2025 | |
| Trexquant Investment LP |
13F
|
Company |
0.31%
|
25,576
|
$384,919 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.29%
|
24,074
|
$362,315 | — | 31 Dec 2025 | |
| Walleye Capital LLC |
13F
|
Company |
0.29%
|
23,790
|
$358,040 | — | 31 Dec 2025 | |
| Laura D. Tyson |
3/4/5
|
Director |
—
mixed-class rows
|
469,217
mixed-class rows
|
$298,727 | — | 04 Jun 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.23%
|
19,382
|
$291,699 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.23%
|
18,779
|
$282,623 | — | 31 Dec 2025 | |
| MANGROVE PARTNERS IM, LLC |
13F
|
Company |
0.22%
|
18,061
|
$271,818 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.22%
|
18,040
|
$271,502 | — | 31 Dec 2025 | |
| Ira M. Birns |
3/4/5
|
Director |
—
mixed-class rows
|
418,563
mixed-class rows
|
$251,366 | — | 04 Jun 2025 | |
| HighTower Advisors, LLC |
13F
|
Company |
0.2%
|
16,307
|
$245,420 | — | 31 Dec 2025 | |
| CANADA PENSION PLAN INVESTMENT BOARD |
13F
|
Company |
0.19%
|
16,100
|
$242,305 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for STEM, INC.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -12.5% | $4,354 | $10.83 | -402 | 2,823 | 11 Mar 2026 | Direct |
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -16.9% | $7,284 | $11.12 | -655 | 3,225 | 10 Mar 2026 | Direct |
| Saul R. Laureles | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -3.32% | $10,475 | $11.12 | -942 | 27,450 | 10 Mar 2026 | Direct |
| Michael James Carlson | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -9.65% | $23,118 | $11.12 | -2,079 | 19,458 | 10 Mar 2026 | Direct |
| Arun Narayanan | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -28.4% | $57,212 | $11.12 | -5,145 | 12,980 | 10 Mar 2026 | Direct |
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 60.2% | 1,458 | 3,880 | 07 Mar 2026 | Direct | ||
| Matthew Tappin | STEM | Restricted Stock Unit | Options Exercise | -50% | -1,458 | 1,459 | 07 Mar 2026 | Direct | ||
| Saul R. Laureles | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 11.4% | 2,916 | 28,392 | 07 Mar 2026 | Direct | ||
| Saul R. Laureles | STEM | Restricted Stock Unit | Options Exercise | -50% | -2,916 | 2,918 | 07 Mar 2026 | Direct | ||
| Michael James Carlson | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 19.7% | 3,541 | 21,537 | 07 Mar 2026 | Direct | ||
| Michael James Carlson | STEM | Restricted Stock Unit | Options Exercise | -50.2% | -3,541 | 3,516 | 07 Mar 2026 | Direct | ||
| Arun Narayanan | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 18,125 | 18,125 | 07 Mar 2026 | Direct | |||
| Arun Narayanan | STEM | Restricted Stock Unit | Options Exercise | -76.3% | -18,125 | 5,625 | 07 Mar 2026 | Direct | ||
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -7.1% | $1,850 | $10.00 | -185 | 2,422 | 04 Mar 2026 | Direct |
| Saul R. Laureles | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -1.13% | $2,824 | $9.67 | -292 | 25,476 | 03 Mar 2026 | Direct |
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -10.3% | $2,901 | $9.67 | -300 | 2,607 | 03 Mar 2026 | Direct |
| Saul R. Laureles | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 3.64% | 904 | 25,768 | 01 Mar 2026 | Direct | ||
| Saul R. Laureles | STEM | Restricted Stock Unit | Options Exercise | -100% | -904 | 0 | 01 Mar 2026 | Direct | ||
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 30% | 670 | 2,907 | 01 Mar 2026 | Direct | ||
| Matthew Tappin | STEM | Restricted Stock Unit | Options Exercise | -100% | -670 | 0 | 01 Mar 2026 | Direct | ||
| Arun Narayanan | STEM | Performance Stock Unit | Award | 38,400 | 38,400 | 26 Feb 2026 | Direct | |||
| Arun Narayanan | STEM | Restricted Stock Unit | Award | 57,600 | 57,600 | 26 Feb 2026 | Direct | |||
| Saul R. Laureles | STEM | Performance Stock Unit | Award | 12,000 | 12,000 | 26 Feb 2026 | Direct | |||
| Saul R. Laureles | STEM | Restricted Stock Unit | Award | 18,000 | 18,000 | 26 Feb 2026 | Direct | |||
| Michael James Carlson | STEM | Performance Stock Unit | Award | 17,200 | 17,200 | 26 Feb 2026 | Direct | |||
| Michael James Carlson | STEM | Restricted Stock Unit | Award | 25,800 | 25,800 | 26 Feb 2026 | Direct | |||
| Brian Musfeldt | STEM | Performance Stock Unit | Award | 17,200 | 17,200 | 26 Feb 2026 | Direct | |||
| Brian Musfeldt | STEM | Restricted Stock Unit | Award | 25,800 | 25,800 | 26 Feb 2026 | Direct | |||
| Matthew Tappin | STEM | Performance Stock Unit | Award | 17,200 | 17,200 | 26 Feb 2026 | Direct | |||
| Matthew Tappin | STEM | Restricted Stock Unit | Award | 25,800 | 25,800 | 26 Feb 2026 | Direct | |||
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -14.1% | $4,172 | $11.40 | -366 | 2,237 | 20 Feb 2026 | Direct |
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Tax liability | -16.7% | -522 | 2,603 | 19 Feb 2026 | Direct | ||
| Saul R. Laureles | STEM | Common Stock, Par Value $0.0001 Per Share | Tax liability | -2.11% | -536 | 24,864 | 19 Feb 2026 | Direct | ||
| Michael James Carlson | STEM | Common Stock, Par Value $0.0001 Per Share | Tax liability | -3.9% | -730 | 17,996 | 19 Feb 2026 | Direct | ||
| Michael James Carlson | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 7.72% | 1,342 | 18,726 | 15 Feb 2026 | Direct | ||
| Michael James Carlson | STEM | Restricted Stock Unit | Options Exercise | -100% | -1,342 | 0 | 15 Feb 2026 | Direct | ||
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 66.9% | 1,253 | 3,125 | 15 Feb 2026 | Direct | ||
| Matthew Tappin | STEM | Restricted Stock Unit | Options Exercise | -100% | -1,253 | 0 | 15 Feb 2026 | Direct | ||
| Saul R. Laureles | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 7.58% | 1,790 | 25,400 | 15 Feb 2026 | Direct | ||
| Saul R. Laureles | STEM | Restricted Stock Unit | Options Exercise | -100% | -1,790 | 0 | 15 Feb 2026 | Direct | ||
| Cabot Jeffrey T. | STEM | Stock Option | Award | 3,500 | 3,500 | 05 Jan 2026 | Direct | |||
| Cabot Jeffrey T. | STEM | Performance Stock Unit | Award | 3,500 | 3,500 | 05 Jan 2026 | Direct | |||
| Cabot Jeffrey T. | STEM | Restricted Stock Unit | Award | 7,000 | 7,000 | 05 Jan 2026 | Direct | |||
| Rahul Shukla | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -100% | $59,556 | $16.21 | -3,674 | 0 | 18 Nov 2025 | Direct |
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | -83.7% | $169,637 | $17.70 | -9,584 | 1,872 | 11 Nov 2025 | Direct |
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Tax liability | -32.1% | -5,416 | 11,456 | 10 Nov 2025 | Direct | ||
| Michael James Carlson | STEM | Common Stock, Par Value $0.0001 Per Share | Tax liability | -28% | -6,743 | 17,384 | 10 Nov 2025 | Direct | ||
| Rahul Shukla | STEM | Common Stock, Par Value $0.0001 Per Share | Tax liability | -36.1% | -2,076 | 3,674 | 10 Nov 2025 | Direct | ||
| Saul R. Laureles | STEM | Common Stock, Par Value $0.0001 Per Share | Tax liability | -12.5% | -3,379 | 23,610 | 10 Nov 2025 | Direct | ||
| Matthew Tappin | STEM | Common Stock, Par Value $0.0001 Per Share | Options Exercise | 801.3% | 15,000 | 16,872 | 07 Nov 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.