Peter R. Kellogg - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Peter R. Kellogg has filed 3 SEC Form 4 filings across 1 company in the last 90 days - buying. Lifetime open-market purchases: $4.17M. Historical track record: 2/5 stars across 11 tracked purchases.
Profile
Peter R. Kellogg is a beneficial owner of more than 10% of MERCER INTERNATIONAL INC. (MERC), as disclosed in SEC ownership filings. Kellogg has reported 7 insider filings with the SEC since 2025. The most recent filing was in July 2026.
| Role | 10% Owner |
|---|---|
| Notability | 30/100 |
Board memberships
- MERCER INTERNATIONAL INC.
Reported roles
- 10% Owner
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★☆☆☆ (2/5) |
|---|---|
| Total purchases tracked | 11 |
| Purchases with forward-return data | 11 |
| 30-day win rate | 27% |
| 90-day win rate | 0% |
| Avg 5-day return | +2.91% |
| Avg 30-day return | -0.34% |
| Avg 90-day return | -17.00% |
| Best 30-day return | +7.24% |
Trading Pattern
InsiderAlpha's records for Peter R. Kellogg go back to 2025: 6 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $245K (17 buys totaling $4.17M). The largest single buy on record is $2.47M of MERC in 2025. 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 Peter R. Kellogg 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.
- 10% Owner at MERCER INTERNATIONAL INC. (MERC) - 6 filings, 2025 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-20 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 105.0K | $0.97 | $102K |
| 2026-05-20 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 380.0K | $0.96 | $367K |
| 2026-05-20 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 215.0K | $0.95 | $204K |
| 2026-05-15 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 200.0K | $0.88 | $176K |
| 2026-05-15 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 57.0K | $0.88 | $50K |
| 2026-05-15 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 43.0K | $0.84 | $36K |
| 2026-03-10 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 70.0K | $3.38 | $237K |
| 2025-07-24 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 760.0K | $3.25 | $2.47M |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 30.6K | $3.75 | $115K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 1.2K | $3.67 | $4K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 36.6K | $3.62 | $133K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 13.6K | $3.62 | $49K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 8.9K | $3.72 | $33K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 12.2K | $3.72 | $45K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 12.3K | $3.72 | $46K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 19.6K | $3.75 | $73K |
| 2025-07-09 | MERC | MERCER INTERNATIONAL INC. | P - Open-market purchase | 7.0K | $3.73 | $26K |
Companies - Last 90 Days
- MERCER INTERNATIONAL INC. (MERC) - 3 filings, last 2026-07-08
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Peter R. Kellogg 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.
- Linda J. Welty - $31K of MERC open-market activity in the last 12 months
- Alice Laberge - $14K of MERC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Gjorgi Popstefanov
- Adam D. Portnoy
- David Portnoy
- PRUDENTIAL FINANCIAL INC
- PRUDENTIAL INSURANCE CO OF AMERICA
- PUBLIC INVESTMENT FUND
- Qatar Investment Authority
- R01 Fund LP
Frequently Asked Questions
Who is Peter R. Kellogg?
Peter R. Kellogg is a beneficial owner of more than 10% of MERCER INTERNATIONAL INC. (MERC), as disclosed in SEC ownership filings. Kellogg has reported 7 insider filings with the SEC since 2025. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Peter R. Kellogg submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Peter R. Kellogg been buying or selling stock?
Recorded transactions: 17 open-market purchases ($4.17M) and 0 open-market sales across all tracked filings.
How accurate is Peter R. Kellogg's historical track record?
Across 11 tracked purchases, Peter R. Kellogg averaged -0.3% avg 30-day return with a 27% 30-day win rate. InsiderAlpha rates the track record at 2/5 stars.
Where can I see all of Peter R. Kellogg'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 Peter R. Kellogg profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.