Michael L Speiser
CIK 1433644 · last filed 2026-09-09
Michael L Speiser is a corporate insider who has filed 121 SEC Form 4 insider transactions across 11 companies since 2008. The most recent filing shows the insider sold $18.0M of SNOW on Sep 9, 2026. Across all open-market trades the lifetime net is −$893.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $17.6M across reported positions. 19 SEC filings were submitted jointly with Pure Storage, Inc.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$17.58M
11
121
-$893.01M
Filer Profile
PALO ALTO, CA 94304-1005
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SNOW | Director | 22,572 | $335.94 | $7.58M | -$745.35M | 37 | 2026-09-09 |
| WDAY | Director | 9,236 | $189.45 | $1.75M | $0 | 4 | 2026-06-18 |
| Everpure, Inc. (PSTG) Delisted | Director | 89,337 | $67.80 | $6.06M | -$155.00M | 16 | 2019-06-24 |
| Forty Seven, Inc. (FTSV) Delisted | 10%+ Owner | 53,587 | — | — | $2.25M | 1 | 2018-07-03 |
| YEXT | 10%+ Owner | 1,033,755 | $6.47 | $6.69M | $0 | 2 | 2017-12-05 |
| Venus Concept Inc. (HAIR) Delisted | 10%+ Owner | 138,639 | — | — | $0 | 2 | 2017-10-18 |
| Mattersight Corp (MATR) Delisted | 10%+ Owner | 3,274,237 | — | — | -$1.98M | 14 | 2017-06-02 |
| Molecular Templates, Inc. (THLD) Delisted | 10%+ Owner | 811,428 | — | — | $4.20M | 5 | 2014-10-03 |
| DEXTERA SURGICAL INC (CRDC) Delisted | 10%+ Owner | 341,279 | — | — | $1.03M | 3 | 2013-03-22 |
| CORT | 10%+ Owner | 13,399 | $116.10 | $1.56M | $344.8K | 4 | 2012-04-02 |
| Mattersight Corp (ELOY) Delisted | 10%+ Owner | 5,853 | — | — | $1.49M | 9 | 2008-09-16 |
Recent Filings
121 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-09 | SNOW | Sell (S) | −50,741 | -$17.96M | EDGAR |
| 2026-09-04 | SNOW | Notice (144) | −50,741 | -$17.96M | EDGAR |
| 2026-08-11 | SNOW | Sell (S) | −50,741 | -$16.44M | EDGAR |
| 2026-08-07 | SNOW | Notice (144) | −50,741 | -$16.44M | EDGAR |
| 2026-07-08 | SNOW | Sell (S) | −840 | -$216.6K | EDGAR |
| 2026-07-08 | SNOW | Sell (S) | −2,520 | -$649.9K | EDGAR |
| 2026-07-08 | SNOW | Sell (S) | −47,381 | -$12.22M | EDGAR |
| 2026-07-06 | SNOW | Notice (144) | −50,741 | -$13.09M | EDGAR |
| 2026-07-01 | SNOW | Grant (A) | +1,273 | $0 | EDGAR |
| 2026-06-18 | WDAY | Grant (A) | +2,879 | $0 | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.