Quick Takeaways
- Matthew Tappin has 1 issuer position tracked on this page.
- Estimated disclosed ownership value: $557,991.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Matthew Tappin
- Location
- San Francisco, CA
- Summary
- The estimated net worth of Matthew Tappin is at least $557,991 dollars as of 13 Mar 2026. Matthew Tappin is the President, Software Products of STEM, INC. and owns shares of STEM, INC. (STEM) stock worth about $558K.
- Signature
- /s/ Sarah Dunn, attorney-in-fact
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Matthew Tappin and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: STEM, INC. ($557,991).
- Past-year value change for that position: -$200,093.
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Official SEC Source
Filed on Form 4
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
See Original FilingOwnership of Matthew Tappin
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| STEM | STEM, INC. | President, Software Products | $557,991 | -$200,093 | -26% | 11 Mar 2026 |
Insider Transactions Reported by Matthew Tappin:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.