Insider Trading February 23, 2026

Stem President Sells 366 Shares; Company Sees Executive Changes Amid Software Shift

Matthew Tappin disposed of $4,172 worth of STEM stock as leadership reshuffle and software-first strategy continue

By Hana Yamamoto STEM
Stem President Sells 366 Shares; Company Sees Executive Changes Amid Software Shift
STEM

Matthew Tappin, President of Software Products at Stem, Inc. (NYSE:STEM), sold 366 shares on February 20, 2026, for $11.40 apiece, totaling $4,172, according to a Form 4 filing with the SEC. The transaction leaves Tappin with 2,237 directly held shares. The sale coincides with a share price of $10.62 and a 36% decline over six months, even as InvestingPro flags Stem among Most Undervalued names based on its Fair Value assessment. Separately, Stem is moving through executive changes, including a CAO transition and the CEO joining the board, as the company pursues a software-centric clean energy strategy and reports positive adjusted EBITDA alongside rising software revenue.

Key Points

  • Matthew Tappin, President, Software Products at Stem, Inc., sold 366 shares on February 20, 2026, at $11.40 per share for a total of $4,172.
  • After the sale Tappin directly owns 2,237 shares; the stock was trading at $10.62 and is down 36% over the past six months, while InvestingPro lists Stem among Most Undervalued names based on Fair Value.
  • Stem is undergoing executive changes: Rahul Shukla will step down as CAO effective December 19, Jeffrey Cabot will become CAO on January 5, 2026, and CEO Arun Narayanan was added as a Class I Director effective December 1, 2025, amid a push toward a software-centric clean energy strategy and reported positive adjusted EBITDA and software revenue growth.

Matthew Tappin, who serves as President, Software Products at Stem, Inc. (NYSE:STEM), recorded a sale of 366 shares of the companys common stock on February 20, 2026, according to a Form 4 filing with the Securities and Exchange Commission. The shares were sold at $11.40 per share for an aggregate transaction amount of $4172.

Following that disposition, Tappin directly holds 2237 shares of Stem stock. The transaction was recorded while the market price for STEM was trading at $10.62 and the shares had fallen 36% over the prior six months.


Context and available research

InvestingPro analysis notes Stem appears on its Most Undervalued list based on the services Fair Value assessment. For market participants seeking further research, the platform lists one of over 1,400 comprehensive Pro Research Reports covering STEM, as well as 15 additional ProTips available on InvestingPro.


Recent management moves

The company has also announced changes to its leadership team and board. Rahul Shukla will step down as chief accounting officer effective December 19. Jeffrey Cabot is slated to assume the CAO role on January 5, 2026; his background includes positions at Oak View Group and Air Methods Corporation.

In a separate governance update, Stems Board of Directors added CEO Arun Narayanan as a Class I Director effective December 1, 2025. Narayanan has led the company since January 2025 and has been central to Stems reorientation toward a software-centric clean energy strategy. Under his tenure, the company has reported positive adjusted EBITDA and growth in software revenue.


Implications noted in filings and corporate updates

The insider sale and the set of executive and board changes are presented in public filings and company notices. The information available through those filings and InvestingPros research resources provides the factual record; the companys strategic messaging points to a focus on software-driven clean energy solutions accompanied by reported improvements in adjusted EBITDA and software revenue.

Readers should note the details above are drawn from the SEC filing and company announcements; they represent the recorded transaction and the documented leadership changes.

Risks

  • Share-price volatility - STEM's market price has declined 36% over six months, indicating potential near-term market risk for shareholders.
  • Leadership transitions - The departure of the chief accounting officer and the arrival of a new CAO introduce execution and reporting continuity risks for the company.
  • Insider selling - The recorded sale by a senior executive is a disclosed insider transaction that some investors may view as an uncertainty, although the sale size is specified.

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