Peter R. Kellogg
CIK 897485 · View on SEC EDGAR ↗
Activist
First SEC filing: May 21, 2026 · Latest: May 21, 2026
On this page
Insider at
Insider transactions
50 buys (P)
0 sells (S)
Net:
$3,175,677
+ 2 non-open-market transactions below
Avg return of open purchases vs now:
-63.8%
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
2 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 12, 2026 | MERC | P | 14,031 | $0.91 | $12,768 | 1,385,672 Direct | +1.02% | Acquired | -48.3% (price as of 2026-08-19) |
| June 12, 2026 | MERC | P | 200 | $0.91 | $182 | 1,371,641 Direct | +0.01% | Acquired | -48.3% (price as of 2026-08-19) |
| June 12, 2026 | MERC | P | 1,210 | $0.90 | $1,089 | 1,371,441 Direct | +0.09% | Acquired | -47.8% (price as of 2026-08-19) |
| June 12, 2026 | MERC | P | 36,000 | $0.93 | $33,480 | 1,370,231 Direct | +2.70% | Acquired | -49.5% (price as of 2026-08-19) |
| June 11, 2026 | MERC | P | 136,000 | $0.86 | $116,960 | 1,334,231 Direct | +11.35% | Acquired | -45.3% (price as of 2026-08-19) |
| June 10, 2026 | MERC | P | 36,000 | $0.82 | $29,520 | 1,198,231 Direct | +3.10% | Acquired | -42.7% (price as of 2026-08-19) |
| June 9, 2026 | MERC | P | 23,637 | $0.79 | $18,673 | 1,162,231 Direct | +2.08% | Acquired | -40.5% (price as of 2026-08-19) |
| June 8, 2026 | MERC | P | 34,733 | $0.80 | $27,786 | 1,138,594 Direct | +3.15% | Acquired | -41.2% (price as of 2026-08-19) |
| June 5, 2026 | MERC | P | 36,000 | $0.85 | $30,600 | 1,103,861 Direct | +3.37% | Acquired | -44.7% (price as of 2026-08-19) |
| June 4, 2026 | MERC | P | 36,000 | $0.89 | $32,040 | 1,067,861 Direct | +3.49% | Acquired | -47.2% (price as of 2026-08-19) |
| June 2, 2026 | MERC | P | 1,047 | $0.92 | $963 | 1,031,861 Direct | +0.10% | Acquired | -48.9% (price as of 2026-08-19) |
| June 1, 2026 | MERC | P | 10,154 | $0.91 | $9,240 | 1,030,814 Direct | +0.99% | Acquired | -48.3% (price as of 2026-08-19) |
| June 1, 2026 | MERC | P | 2,731 | $0.90 | $2,458 | 1,020,660 Direct | +0.27% | Acquired | -47.8% (price as of 2026-08-19) |
| June 1, 2026 | MERC | P | 36,000 | $0.90 | $32,400 | 1,017,929 Direct | +3.67% | Acquired | -47.8% (price as of 2026-08-19) |
| June 1, 2026 | MERC | P | 16,000 | $0.90 | $14,400 | 981,929 Direct | +1.66% | Acquired | -47.8% (price as of 2026-08-19) |
| May 19, 2026 | MERC | P | 105,000 | $0.97 | $101,850 | 1,957,000 Indirect | +5.67% | Acquired | -51.5% (price as of 2026-08-19) |
| May 18, 2026 | MERC | P | 380,000 | $0.96 | $364,800 | 1,852,000 Indirect | +25.82% | Acquired | -51.0% (price as of 2026-08-19) |
| May 15, 2026 | MERC | P | 215,000 | $0.95 | $204,250 | 1,472,000 Indirect | +17.10% | Acquired | -50.5% (price as of 2026-08-19) |
| May 14, 2026 | MERC | P | 200,000 | $0.88 | $176,000 | 1,257,000 Indirect | +18.92% | Acquired | -46.6% (price as of 2026-08-19) |
| May 12, 2026 | MERC | P | 57,000 | $0.88 | $50,160 | 1,057,000 Indirect | +5.70% | Acquired | -46.6% (price as of 2026-08-19) |
| May 12, 2026 | MERC | P | 43,000 | $0.84 | $36,120 | 253,000 Indirect | +20.48% | Acquired | -44.0% (price as of 2026-08-19) |
| Nov. 13, 2025 | MERC | P | 125,000 | $1.74 | $217,500 | 1,320,000 Indirect | +10.46% | Acquired | -73.0% (price as of 2026-08-19) |
| Nov. 13, 2025 | MERC | P | 100,000 | $1.72 | $172,000 | 1,195,000 Indirect | +9.13% | Acquired | -72.7% (price as of 2026-08-19) |
| Nov. 12, 2025 | MERC | P | 200,000 | $1.68 | $336,000 | 1,520,000 Indirect | +15.15% | Acquired | -72.0% (price as of 2026-08-19) |
| Nov. 12, 2025 | MERC | P | 25,000 | $1.69 | $42,250 | 1,095,000 Indirect | +2.34% | Acquired | -72.2% (price as of 2026-08-19) |
| Nov. 12, 2025 | MERC | P | 70,000 | $1.72 | $120,400 | 1,070,000 Indirect | +7.00% | Acquired | -72.7% (price as of 2026-08-19) |
| Nov. 7, 2025 | MERC | P | 18,000 | $1.79 | $32,220 | 1,318,540 Indirect | +1.38% | Acquired | -73.7% (price as of 2026-08-19) |
| Nov. 7, 2025 | MERC | P | 28,701 | $1.67 | $47,931 | 1,300,540 Indirect | +2.26% | Acquired | -71.9% (price as of 2026-08-19) |
| Nov. 7, 2025 | MERC | P | 1,200 | $1.61 | $1,932 | 1,271,839 Indirect | +0.09% | Acquired | -70.8% (price as of 2026-08-19) |
| Nov. 7, 2025 | MERC | P | 6,099 | $1.56 | $9,514 | 1,270,639 Indirect | +0.48% | Acquired | -69.9% (price as of 2026-08-19) |
| Nov. 6, 2025 | MERC | P | 58,000 | $1.86 | $107,880 | 1,264,540 Indirect | +4.81% | Acquired | -74.7% (price as of 2026-08-19) |
| Nov. 6, 2025 | MERC | P | 35,715 | $1.89 | $67,501 | 1,206,540 Indirect | +3.05% | Acquired | -75.1% (price as of 2026-08-19) |
| Nov. 6, 2025 | MERC | P | 285 | $1.84 | $524 | 1,170,825 Indirect | +0.02% | Acquired | -74.5% (price as of 2026-08-19) |
| Nov. 6, 2025 | MERC | P | 36,000 | $1.87 | $67,320 | 1,170,540 Indirect | +3.17% | Acquired | -74.9% (price as of 2026-08-19) |
| Nov. 5, 2025 | MERC | P | 25,938 | $1.92 | $49,801 | 1,134,540 Indirect | +2.34% | Acquired | -75.5% (price as of 2026-08-19) |
| Nov. 5, 2025 | MERC | P | 36,000 | $1.91 | $68,760 | 1,108,602 Indirect | +3.36% | Acquired | -75.4% (price as of 2026-08-19) |
| Nov. 5, 2025 | MERC | P | 36,000 | $1.88 | $67,680 | 1,072,602 Indirect | +3.47% | Acquired | -75.0% (price as of 2026-08-19) |
| Nov. 4, 2025 | MERC | P | 36,602 | $1.93 | $70,642 | 1,036,602 Indirect | +3.66% | Acquired | -75.6% (price as of 2026-08-19) |
| Oct. 30, 2025 | MERC | P | 36,000 | $2.07 | $74,520 | 646,000 Direct | +5.90% | Acquired | -77.3% (price as of 2026-08-19) |
| Oct. 30, 2025 | MERC | P | 6,160 | $2.11 | $12,998 | 1,000,000 Indirect | +0.62% | Acquired | -77.7% (price as of 2026-08-19) |
| Oct. 30, 2025 | MERC | P | 350 | $2.11 | $738 | 993,840 Indirect | +0.04% | Acquired | -77.7% (price as of 2026-08-19) |
| Oct. 30, 2025 | MERC | P | 18,650 | $2.11 | $39,352 | 993,490 Indirect | +1.91% | Acquired | -77.7% (price as of 2026-08-19) |
| Oct. 29, 2025 | MERC | P | 5,540 | $2.27 | $12,576 | 974,840 Indirect | +0.57% | Acquired | -79.3% (price as of 2026-08-19) |
| Oct. 29, 2025 | MERC | P | 19,000 | $2.27 | $43,130 | 969,300 Indirect | +2.00% | Acquired | -79.3% (price as of 2026-08-19) |
| Oct. 29, 2025 | MERC | P | 17,000 | $2.26 | $38,420 | 950,300 Indirect | +1.82% | Acquired | -79.2% (price as of 2026-08-19) |
| Oct. 29, 2025 | MERC | P | 17,000 | $2.27 | $38,590 | 933,300 Indirect | +1.86% | Acquired | -79.3% (price as of 2026-08-19) |
| Oct. 28, 2025 | MERC | P | 41,778 | $2.44 | $101,938 | 916,300 Indirect | +4.78% | Acquired | -80.7% (price as of 2026-08-19) |
| Oct. 28, 2025 | MERC | P | 7,700 | $2.44 | $18,788 | 874,522 Indirect | +0.89% | Acquired | -80.7% (price as of 2026-08-19) |
| Oct. 3, 2025 | MERC | P | 3,122 | $2.79 | $8,710 | 866,822 Indirect | +0.36% | Acquired | -83.2% (price as of 2026-08-19) |
| Oct. 3, 2025 | MERC | P | 3,700 | $2.79 | $10,323 | 863,700 Indirect | +0.43% | Acquired | -83.2% (price as of 2026-08-19) |
| July 22, 2025 | MERC | P | 70,000 | $3.38 | $236,600 | 1,000,000 Indirect | +7.53% | Acquired | -86.1% (price as of 2026-08-19) |
| July 22, 2025 | MERC | P | 760,000 | $3.25 | $2,470,000 | 2,300,000 Indirect | +49.35% | Acquired | -85.5% (price as of 2026-08-19) |
| June 10, 2025 | MERC | P | 8,900 | $3.72 | $33,108 | 860,000 Indirect | +1.05% | Acquired | -87.4% (price as of 2026-08-19) |
| June 10, 2025 | MERC | P | 12,220 | $3.72 | $45,458 | 851,100 Indirect | +1.46% | Acquired | -87.4% (price as of 2026-08-19) |
| June 10, 2025 | MERC | P | 12,300 | $3.72 | $45,756 | 838,900 Indirect | +1.49% | Acquired | -87.4% (price as of 2026-08-19) |
| June 9, 2025 | MERC | P | 30,629 | $3.75 | $114,859 | 2,000,000 Indirect | +1.56% | Acquired | -87.5% (price as of 2026-08-19) |
| June 9, 2025 | MERC | P | 1,171 | $3.67 | $4,298 | 1,969,371 Indirect | +0.06% | Acquired | -87.2% (price as of 2026-08-19) |
| June 9, 2025 | MERC | P | 19,597 | $3.75 | $73,489 | 826,600 Indirect | +2.43% | Acquired | -87.5% (price as of 2026-08-19) |
| June 9, 2025 | MERC | P | 7,003 | $3.72 | $26,051 | 807,003 Indirect | +0.88% | Acquired | -87.4% (price as of 2026-08-19) |
| June 6, 2025 | MERC | P | 36,600 | $3.62 | $132,492 | 1,968,200 Indirect | +1.89% | Acquired | -87.0% (price as of 2026-08-19) |
| June 6, 2025 | MERC | P | 13,600 | $3.62 | $49,232 | 1,931,600 Indirect | +0.71% | Acquired | -87.0% (price as of 2026-08-19) |
| March 8, 2022 | MERC | P | 3,300 | $13.00 | $42,900 | 621,000 Direct | +0.53% | Acquired | -96.4% (price as of 2026-08-19) |
| March 7, 2022 | MERC | P | 7,700 | $12.76 | $98,252 | 617,700 Direct | +1.26% | Acquired | -96.3% (price as of 2026-08-19) |
| Nov. 8, 2021 | MERC | P | 37,140 | $10.47 | $388,856 | 610,000 Direct | +6.48% | Acquired | -95.5% (price as of 2026-08-19) |
| Nov. 5, 2021 | MERC | P | 100,000 | $10.50 | $1,050,000 | 572,860 Direct | +21.15% | Acquired | -95.5% (price as of 2026-08-19) |
| Nov. 4, 2021 | MERC | P | 62,860 | $10.34 | $649,972 | 472,860 Direct | +15.33% | Acquired | -95.5% (price as of 2026-08-19) |
| Jan. 8, 2018 | MERC | P | 1,000 | $14.31 | $14,310 | 1,030,000 Indirect | +0.10% | Acquired | -96.7% (price as of 2026-08-19) |
| Dec. 29, 2017 | MERC | P | 9,000 | $14.25 | $128,250 | 10,000 Indirect | +900.00% | Acquired | -96.7% (price as of 2026-08-19) |
| Dec. 28, 2017 | MERC | P | 20,000 | $14.47 | $289,400 | 2,000,000 Indirect | +1.01% | Acquired | -96.8% (price as of 2026-08-19) |
| Dec. 27, 2017 | MERC | P | 20,000 | $14.39 | $287,800 | 1,980,000 Indirect | +1.02% | Acquired | -96.7% (price as of 2026-08-19) |
| Dec. 26, 2017 | MERC | P | 20,000 | $14.28 | $285,600 | 1,940,000 Indirect | +1.04% | Acquired | -96.7% (price as of 2026-08-19) |
| Dec. 22, 2017 | MERC | P | 20,000 | $13.99 | $279,800 | 1,920,000 Indirect | +1.05% | Acquired | -96.6% (price as of 2026-08-19) |
| Dec. 21, 2017 | MERC | P | 20,000 | $13.98 | $279,600 | 1,920,000 Indirect | +1.05% | Acquired | -96.6% (price as of 2026-08-19) |
| Dec. 18, 2017 | MERC | P | 6,970 | $13.09 | $91,237 | 510,000 Indirect | +1.39% | Acquired | -96.4% (price as of 2026-08-19) |
| Dec. 18, 2017 | MERC | P | 1,574 | $13.08 | $20,588 | 540,000 Indirect | +0.29% | Acquired | -96.4% (price as of 2026-08-19) |
| Dec. 18, 2017 | MERC | P | 1,970 | $13.08 | $25,768 | 630,000 Indirect | +0.31% | Acquired | -96.4% (price as of 2026-08-19) |
| Dec. 8, 2017 | MERC | P | 1,257 | $13.45 | $16,907 | 410,000 Direct | +0.31% | Acquired | -96.5% (price as of 2026-08-19) |
| Dec. 8, 2017 | MERC | P | 1,986 | $13.40 | $26,612 | 13,475,000 Indirect | +0.01% | Acquired | -96.5% (price as of 2026-08-19) |
| Dec. 7, 2017 | MERC | P | 14,000 | $13.46 | $188,440 | 1,900,000 Indirect | +0.74% | Acquired | -96.5% (price as of 2026-08-19) |
| Dec. 4, 2017 | MERC | P | 3,500 | $13.50 | $47,250 | 1,886,000 Indirect | +0.19% | Acquired | -96.5% (price as of 2026-08-19) |
| Oct. 10, 2017 | MERC | P | 500,000 | $12.49 | $6,245,000 | 2,000,000 Indirect | +33.33% | Acquired | -96.2% (price as of 2026-08-19) |
| Oct. 10, 2017 | MERC | P | 500,000 | $12.49 | $6,245,000 | 800,000 Indirect | +166.67% | Acquired | -96.2% (price as of 2026-08-19) |
| Oct. 10, 2017 | MERC | P | 500,000 | $12.49 | $6,245,000 | 975,000 Indirect | +105.26% | Acquired | -96.2% (price as of 2026-08-19) |
| Oct. 10, 2017 | MERC | P | 500,000 | $12.49 | $6,245,000 | 1,882,500 Indirect | +36.17% | Acquired | -96.2% (price as of 2026-08-19) |
| Oct. 10, 2017 | MERC | P | 258,743 | $12.49 | $3,231,700 | 408,743 Direct | +172.50% | Acquired | -96.2% (price as of 2026-08-19) |
| Oct. 6, 2017 | MERC | P | 200,000 | $11.95 | $2,390,000 | 300,000 Indirect | +200.00% | Acquired | -96.1% (price as of 2026-08-19) |
| Oct. 6, 2017 | MERC | P | 200,000 | $11.95 | $2,390,000 | 475,000 Indirect | +72.73% | Acquired | -96.1% (price as of 2026-08-19) |
| Sept. 29, 2017 | MERC | P | 75,000 | $11.89 | $891,750 | 1,382,500 Indirect | +5.74% | Acquired | -96.0% (price as of 2026-08-19) |
| Sept. 26, 2017 | MERC | P | 125,000 | $11.40 | $1,425,000 | 275,000 Indirect | +83.33% | Acquired | -95.9% (price as of 2026-08-19) |
| Oct. 31, 2008 | MERC | P | 0 | — | — | 1,645,161 Indirect | 0.00% | Acquired | (price as of 2026-08-19) |
| Oct. 31, 2008 | MERC | P | 4,500,000 | — | — | 580,645 Indirect | — | Acquired | (price as of 2026-08-19) |
| Oct. 31, 2008 | MERC | P | 0 | — | — | 162,162 Direct | 0.00% | Acquired | (price as of 2026-08-19) |
| Oct. 31, 2008 | MERC | P | 100,000 | $2.32 | $232,000 | 6,178,909 Indirect | +1.65% | Acquired | -79.7% (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Oct. 31, 2008 | MERC | 8.8 % CONVERTIBLE SENIOR NOTES | COMMON SHARES (0) | $7.75 | Oct. 10, 2010 | 0 | Acquired |
| Oct. 31, 2008 | MERC | 8.5 % SENIOR SUBORDINATED CONVERTIBLE NOTES | COMMON SHARES (0) | $7.75 | Oct. 10, 2010 | 4,500,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).