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sellWeak cluster of 2

Matthew Tappin sold $4,172 of STEM

President, Software Products at STEM, INC.. 366 shares at an average of $11.40, traded Feb 20, 2026, filed Feb 23, 2026.

Warning score
33
Value
$4,172
366 shares
Holdings after
2,237
-14% from before
From 52-week low
+91%
low $5.90, close $11.26
From 52-week high
-62%
high $29.79, as of Feb 20, 2026

Score components

  • Role
    President
    +20
  • Trade size
    $4k at market
    0
  • Share of holdings sold
    Sold 14% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -1.4%, 3m -10.9%, 6m -48.6%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

STEMOct 9, 2026 · close 4.16
Since filing Feb 23, 2026: -60.8%SPY +15.0% · excess -75.8%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001986259-26-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Feb 20, 2026SOpen-market sale
Common Stock, Par Value $0.0001 Per Share
-366$11.40$4,1722,237Feb 23, 2026

Related signals

Other insiders at STEM, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
5Weak
STEMsell
STEM, INC.
Michael James Carlson
President, Managed Services
$682
146 shares
-1%
20Weak
STEMsell 410b5-1
STEM, INC.
Matthew Tappin
President, Software Products
$4,354
402 shares
-12%
20Weak
STEMsell 4
STEM, INC.
Michael James Carlson
President, Managed Services
$23k
2,079 shares
-10%
15Weak
STEMsell 4
STEM, INC.
Saul R. Laureles
Chief Legal Officer
$10k
942 shares
-3%
42Moderate
STEMsell 4
STEM, INC.
Arun Narayanan
Chief Executive Officer
$57k
5,145 shares
-28%
25Weak
STEMsell 4
STEM, INC.
Matthew Tappin
President, Software Products
$7,284
655 shares
-17%
30Weak
STEMsell 4
STEM, INC.
Saul R. Laureles
Chief Legal Officer
$2,824
292 shares
-1%
40Moderate
STEMsell 4
STEM, INC.
Matthew Tappin
President, Software Products
$4,751
485 shares
-17%
59Moderate
STEMsell 2
STEM, INC.
Matthew Tappin
President, Software Products
$170k
9,584 shares
-84%
50Moderate
STEMsell 2
STEM, INC.
Rahul Shukla
Chief Accounting Officer
$60k
3,674 shares
-100%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.