Michael Stock - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Michael Stock has filed 3 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $2.91M.
Profile
Michael Stock is the Chief Financial Officer at Liberty Energy Inc. (LBRT). Stock has reported 13 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Chief Financial Officer |
|---|---|
| Notability | 34/100 |
Board memberships
- Liberty Energy Inc.
Reported roles
- Chief Financial Officer
Trading Pattern
InsiderAlpha's records for Michael Stock go back to 2024: 13 primary Form 4 filings, an average of 4.3 per year. 10 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Michael Stock has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Chief Financial Officer at Liberty Energy Inc. (LBRT) - 13 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-01 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 10.0K | $25.89 | $259K |
| 2026-06-02 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 3.3K | $31.00 | $103K |
| 2026-06-02 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 13.3K | $29.46 | $393K |
| 2026-05-20 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 20.0K | $33.48 | $670K |
| 2026-04-15 | LBRT | Liberty Energy Inc. | F - Tax withholding / forfeiture | 67.4K | $27.92 | $1.88M |
| 2026-04-03 | LBRT | Liberty Energy Inc. | F - Tax withholding / forfeiture | 45.0K | $27.92 | $1.26M |
| 2026-04-03 | LBRT | Liberty Energy Inc. | A - Grant or award | 102.9K | $0.00 | |
| 2026-02-10 | LBRT | Liberty Energy Inc. | S - Open-market sale | 25.0K | $25.38 | $634K |
| 2026-01-21 | LBRT | Liberty Energy Inc. | A - Grant or award | 54.2K | - | |
| 2024-12-30 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 5.0K | $19.51 | $98K |
| 2024-12-03 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 10.0K | $18.49 | $185K |
| 2024-11-26 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 5.0K | $19.51 | $98K |
| 2024-11-07 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 5.0K | $18.45 | $92K |
| 2024-11-04 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 5.0K | $17.21 | $86K |
| 2024-10-02 | LBRT | Liberty Energy Inc. | S - Open-market sale [10b5-1] | 15.0K | $19.23 | $288K |
Companies - Last 90 Days
- Liberty Energy Inc. (LBRT) - 3 filings, last 2026-07-01
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Michael Stock has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- R. Sean Elliott - $635K of LBRT open-market activity in the last 12 months
- Arjun N. Murti - $500K of LBRT open-market activity in the last 12 months
- William F. Kimble - $249K of LBRT open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Andrew J. Mills
- Charles N. Mills
- Kevin J. Mills
- Mink Brook Asset Management LLC
- Shankh Mitra
- MITSUI SUMITOMO INSURANCE CO LTD
- Arturo R. Moreno
- Matthew T. Moroun
Frequently Asked Questions
Who is Michael Stock?
Michael Stock is the Chief Financial Officer at Liberty Energy Inc. (LBRT). Stock has reported 13 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Michael Stock submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Michael Stock been buying or selling stock?
Recorded transactions: 0 open-market purchases and 11 open-market sales ($2.91M) across all tracked filings.
Where can I see all of Michael Stock's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Michael Stock profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.