← United States · Coverage record
US · SEC FORM 4
STEM, INC.
STEM · NYSE · CIK 0001758766 · Technology · Utilities—Renewable
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
22 Form 4 transaction lines observed in the same window
6 sales · 16 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2024-03-18 · BUZBY DAVID S.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 1,149,556
- Previous report
- 1,182,878
- Avg daily volume
- 227,033
- Days to cover
- 5.1
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2024-03-18 | BUZBY DAVID S | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 33,800 | USD 1.81 | USD 61,178 | SEC filing ↗ |
| 2024-03-18 | BUZBY DAVID S | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 33,800 | USD 1.81 | USD 61,178 | SEC filing ↗ |
| 2024-03-15 | BUZBY DAVID S | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 62,500 | USD 1.84 | USD 115,000 | SEC filing ↗ |
| 2024-03-15 | Homenock Kim | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 24,000 | USD 1.84 | USD 44,160 | SEC filing ↗ |
| 2024-03-15 | Carlson Michael James | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 44,882 | USD 1.75 | USD 78,544 | SEC filing ↗ |
| 2024-03-15 | BUZBY DAVID S | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 62,500 | USD 1.84 | USD 115,000 | SEC filing ↗ |
| 2024-03-14 | Carlson Michael James | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 10,118 | USD 1.75 | USD 17,706 | SEC filing ↗ |
| 2023-09-15 | BUZBY DAVID S | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 62,000 | USD 4.82 | USD 298,840 | SEC filing ↗ |
| 2022-03-15 | MORGAN MICHAEL C | Purchase (P) | Common Stock, Par Value $0.0001 Per Share | 112,500 | USD 7.62 | USD 857,250 | SEC filing ↗ |
| 2021-04-28 | MORGAN MICHAEL C | Purchase (P) | Common Stock | 50,000 | USD 10.00 | USD 500,000 | SEC filing ↗ |
Form 4 evidence
54 transaction lines in the latest 365-day window; 411 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-29 | Carlson Michael James | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 146 | USD 4.67 | USD 682 | SEC filing ↗ |
| 2026-09-26 | Carlson Michael James | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 305 | USD 4.48 | USD 1,366 | SEC filing ↗ |
| 2026-08-07 | Tammineedi Anil | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-29 | Carlson Michael James | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 146 | USD 4.67 | USD 682 | SEC filing ↗ |
| 2026-09-26 | Carlson Michael James | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 305 | USD 4.48 | USD 1,366 | SEC filing ↗ |
| 2026-08-07 | Tammineedi Anil | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
| 2026-08-07 | TYSON LAURA D | Award / grant (A) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
| 2026-08-07 | Shivram Krishna | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
| 2026-08-07 | Guruswamy Vasudevan | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
| 2026-08-07 | Daley Adam | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
| 2026-08-07 | Birns Ira M | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
| 2026-08-07 | BUZBY DAVID S | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,486 | USD — | USD — | SEC filing ↗ |
| 2026-07-20 | Musfeldt Brian | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 996 | USD 6.11 | USD 6,086 | SEC filing ↗ |
| 2026-07-17 | Musfeldt Brian | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 3,375 | USD 6.26 | USD 21,128 | SEC filing ↗ |
| 2026-07-02 | Tappin Matthew | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 996 | USD 7.85 | USD 7,819 | SEC filing ↗ |
| 2026-07-02 | Narayanan Arun | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 1,996 | USD 7.85 | USD 15,669 | SEC filing ↗ |
| 2026-07-02 | Laureles Saul R. | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 675 | USD 7.85 | USD 5,299 | SEC filing ↗ |
| 2026-07-02 | Carlson Michael James | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 1,347 | USD 7.85 | USD 10,574 | SEC filing ↗ |
| 2026-06-30 | Tappin Matthew | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,750 | USD 7.81 | USD 60,528 | SEC filing ↗ |
| 2026-06-30 | Narayanan Arun | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 8,125 | USD 7.81 | USD 63,456 | SEC filing ↗ |
| 2026-06-30 | Laureles Saul R. | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,750 | USD 7.81 | USD 60,528 | SEC filing ↗ |
| 2026-06-30 | Carlson Michael James | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 7,750 | USD 7.81 | USD 60,528 | SEC filing ↗ |
| 2026-03-11 | Tappin Matthew | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 402 | USD 10.83 | USD 4,354 | SEC filing ↗ |
| 2026-03-10 | Tappin Matthew | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 655 | USD 11.12 | USD 7,284 | SEC filing ↗ |
| 2026-03-10 | Narayanan Arun | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 5,145 | USD 11.12 | USD 57,212 | SEC filing ↗ |
| 2026-03-10 | Laureles Saul R. | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 942 | USD 11.12 | USD 10,475 | SEC filing ↗ |
| 2026-03-10 | Carlson Michael James | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 2,079 | USD 11.12 | USD 23,118 | SEC filing ↗ |
| 2026-03-07 | Tappin Matthew | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 1,458 | USD — | USD — | SEC filing ↗ |
| 2026-03-07 | Narayanan Arun | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 18,125 | USD — | USD — | SEC filing ↗ |
| 2026-03-07 | Laureles Saul R. | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 2,916 | USD — | USD — | SEC filing ↗ |
| 2026-03-07 | Carlson Michael James | Option exercise / conversion (M) | Common Stock, Par Value $0.0001 Per Share | 3,541 | USD — | USD — | SEC filing ↗ |
| 2026-03-04 | Tappin Matthew | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 185 | USD 10.00 | USD 1,850 | SEC filing ↗ |
| 2026-03-03 | Tappin Matthew | Sale (S) | Common Stock, Par Value $0.0001 Per Share | 300 | USD 9.67 | USD 2,901 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | STEM |
| CIK | 0001758766 |
| Sector | Technology |
| Industry | Utilities—Renewable Yahoo Finance |
| SEC SIC | 7373 Services-Computer Integrated Systems Design |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 411 transaction lines from 2021-04-28 to 2026-09-29 11 P purchase lines · 189 S sale lines · 211 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.