SEC Form 4
Stem, Inc. (STEM) insider trading
In the 12 months to Oct 26, 2026, 2 STEM insiders reported open-market sales of $239.6K across 5 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $239.6K
- 5 filings · 2 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 1 of 5
- $4.4K of $239.6K sold (2%)
Who traded STEM, and when
- Sale
- Sale, pre-arranged (10b5-1)
STEM daily close from Oct 27, 2025 to Oct 26, 2026, between $3.01 and $23.46, last $3.07. 5 sale and 0 purchase filings by 2 insiders, marked at their filing dates. Matthew Tappin, President, Software Products: sold $180.0K across 4 filings, first filed Nov 24, 2025, last Mar 13, 2026. Rahul Shukla, Chief Accounting Officer: sold $59.6K across 1 filing, first filed Nov 19, 2025, last Nov 19, 2025.
Largest mark · tap a row for others
Matthew Tappin · President, Software Products
Sale $169,637
9,584 shares at $17.70 avg
Filed Nov 24, 2025 · traded Nov 11
Close on filing date $14.95
Matthew Tappin · President, Software Products
President, Software Products
$180.0K soldRahul Shukla · Chief Accounting Officer
Chief Accounting Officer
$59.6K soldOpen-market trades
5 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Matthew Tappin | President, Software Products | $180.0K | — | 4 | 2% of sales | |
| Rahul Shukla | Chief Accounting Officer | $59.6K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Matthew Tappin President, Software Products | SalePre-arranged (10b5-1) | 402 | $10.83 | $4.4K | 2,823 | |
traded | Matthew Tappin President, Software Products | Sale | 185 | $10.00 | $1.9K | 2,422 | |
traded | Matthew Tappin President, Software Products | Sale | 366 | $11.40 | $4.2K | 2,237 | |
traded | Matthew Tappin President, Software Products | Sale | 9,584 | $17.70 | $169.6K | 1,872 | |
traded | Rahul Shukla Chief Accounting Officer | Sale | 3,674 | $16.21 | $59.6K | 0 |
GET /stocks/filings/vX/form-4?tickers=STEM&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"STEM"
],
"issuer_cik": "0001758766",
"owner_cik": "0001986259",
"accession_number": "0001758766-26-000027",
"form_type": "4",
"filing_date": "2026-03-13",
"period_of_report": "2026-03-11",
"issuer_name": "STEM, INC.",
"issuer_trading_symbol": "STEM",
"owner_name": "Tappin Matthew",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "President, Software Products",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, Par Value $0.0001 Per Share",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-03-11",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 402,
"transaction_price_per_share": 10.83,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 2823,
"transaction_value": 4353.66,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 18, 2025."
}
]
},
{
"tickers": [
"STEM"
],
"issuer_cik": "0001758766",
"owner_cik": "0001986259",
"accession_number": "0001986259-26-000010",
"form_type": "4",
"filing_date": "2026-03-04",
"period_of_report": "2026-03-03",
"issuer_name": "STEM, INC.",
"issuer_trading_symbol": "STEM",
"owner_name": "Tappin Matthew",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "President, Software Products",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, Par Value $0.0001 Per Share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-03-04",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 185,
"transaction_price_per_share": 10,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 2422,
"transaction_value": 1850,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 49 records
- Option exercises29 records
- Tax withholding7 records
- Tax withholding (sold to cover)12 records
- Grants and awards1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Stem, Inc.'s CEO sold stock?
No. Arun Narayanan (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is STEM’s insider data?
These are STEM Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
Build with AI
Track STEM insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for STEM every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
Nothing on this page is investment advice. All data and content is provided for informational purposes under our Terms of Service.