Seifrick A. John - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Seifrick A. John has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Seifrick A. John holds the role of Director at MANNATECH INC (MTEX). John has reported 1 insider filing with the SEC since 2026. The most recent filing was in June 2026.
| Role | Director |
|---|---|
| Notability | 26/100 |
Board memberships
- MANNATECH INC
Reported roles
- Director
Awards & honors
- Listed as Director of Mannatech, Inc. as of 2026-06-05.
Trading Pattern
InsiderAlpha's records for Seifrick A. John go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Seifrick A. John 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.
- Director at MANNATECH INC (MTEX) - 1 filing, 2026
Companies - Last 90 Days
- MANNATECH INC (MTEX) - 1 filing, last 2026-06-05
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Seifrick A. John 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.
- Larry A. Jobe - $33K of MTEX open-market activity in the last 12 months
- Kevin Andrew Robbins - $30K of MTEX open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Thomas J. Shaw
- Silver Point Capital L.P.
- SilverBay Capital Management LLC
- Michael Simanovsky
- Bob R. Simpson
- Ranbir Singh
- Ross Jeffery Sklar
- Barry Sloane
Frequently Asked Questions
Who is Seifrick A. John?
Seifrick A. John holds the role of Director at MANNATECH INC (MTEX). John has reported 1 insider filing with the SEC since 2026. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Seifrick A. John submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Seifrick A. John'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 Seifrick A. John profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.