Updated Jul 17, 2026 · Last SEC filing 2026-06-15
Mountain Lake Acquisition Corp. (MLAC) has filed 10 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-15. 3 Form 8-K material event filings were reported by MLAC in the last 90 days. InsiderAlpha tracks every MLAC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0002029492 |
|---|
| Form 4 filings (90d) | 10 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Latest Form 4 filing | 2026-06-15 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Horlick Douglas | CFO and President | D — Derivative transaction | 478.0K | — | — | SEC | |
| Marquez Michael J. | Director | D — Derivative transaction | 9.1K | — | — | SEC | |
| Lager Jeffrey Todd | Director | M — Option exercise | 9.1K | — | — | SEC | |
| Lager Jeffrey Todd | Director | D — Derivative transaction | 9.1K | — | — | SEC | |
| Vieser Jaime | Director | D — Derivative transaction | 478.0K | — | — | SEC | |
| Mountain Lake Acquisition Sponsor LLC | 10% Owner | D — Derivative transaction | 495.0K | — | — | SEC | |
| Grinberg Paul | Chief Executive Officer | D — Derivative transaction | 478.0K | — | — | SEC | |
| Marquez Michael J. | Director | M — Option exercise | 9.1K | — | — | SEC | |
| Horlick Douglas | CFO | P — Open-market purchase | 12.5K | — | — | SEC | |
| Vieser Jaime | Director | P — Open-market purchase | 25.0K | — | — | SEC | |
| Mountain Lake Acquisition Sponsor LLC | 10% Owner | P — Open-market purchase | 495.0K | — | — | SEC | |
| Grinberg Paul | Chief Executive Officer | P — Open-market purchase | 12.5K | — | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Mountain Lake Acquisition Corp. (MLAC). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Marquez Michael J. | 4 | — |
| Lager Jeffrey Todd | 4 | — |
| Vieser Jaime | 3 | — |
| Grinberg Paul | 3 | — |
| Horlick Douglas | 3 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in MLAC insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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