Mark Campbell Winmill

CIK 1019264 · View on SEC EDGAR ↗

Insider Activist

First SEC filing: Nov. 19, 2003 · Latest: Dec. 5, 2025

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Insider at

Insider transactions

5 buys (P) 0 sells (S) Net: $105,304 + 26 non-open-market transactions below Avg return of open purchases vs now: 4.3% 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

26 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 14, 2026 SELF P 4,000 $5.33 $21,320 368,582 Direct +1.10% Acquired 0.8% (price as of 2026-08-19)
Dec. 5, 2025 SELF P 3,600 $5.09 $18,324 339,238 Direct +1.07% Acquired 5.5% (price as of 2026-08-19)
Dec. 5, 2025 SELF P 800 $5.05 $4,040 335,638 Direct +0.24% Acquired 6.3% (price as of 2026-08-19)
Dec. 4, 2025 SELF P 6,000 $5.14 $30,840 334,838 Direct +1.82% Acquired 4.5% (price as of 2026-08-19)
Dec. 3, 2025 SELF P 6,000 $5.13 $30,780 328,838 Direct +1.86% Acquired 4.7% (price as of 2026-08-19)
May 19, 2025 SELF P 10,000 $5.67 $56,700 322,838 Direct +3.20% Acquired -5.3% (price as of 2026-08-19)
May 30, 2024 SELF P 20,000 $4.97 $99,400 287,494 Direct +7.48% Acquired 8.0% (price as of 2026-08-19)
May 28, 2024 SELF P 100 $4.90 $490 267,494 Direct +0.04% Acquired 9.6% (price as of 2026-08-19)
May 28, 2024 SELF P 375 $4.91 $1,841 267,394 Direct +0.14% Acquired 9.4% (price as of 2026-08-19)
May 28, 2024 SELF P 24 $4.91 $118 267,019 Direct +0.01% Acquired 9.4% (price as of 2026-08-19)
May 28, 2024 SELF P 2,400 $4.90 $11,760 266,995 Direct +0.91% Acquired 9.6% (price as of 2026-08-19)
Nov. 16, 2023 SELF P 1,000 $4.84 $4,840 210,402 Direct +0.48% Acquired 11.0% (price as of 2026-08-19)
Nov. 16, 2023 SELF P 1,000 $4.81 $4,810 209,402 Direct +0.48% Acquired 11.6% (price as of 2026-08-19)
Nov. 16, 2023 SELF P 2,000 $4.87 $9,740 208,402 Direct +0.97% Acquired 10.3% (price as of 2026-08-19)
Nov. 16, 2023 SELF P 1,511 $4.81 $7,268 206,402 Direct +0.74% Acquired 11.6% (price as of 2026-08-19)
Nov. 16, 2023 SELF P 489 $4.81 $2,352 204,891 Direct +0.24% Acquired 11.6% (price as of 2026-08-19)
Nov. 16, 2023 SELF P 1,200 $4.82 $5,784 204,402 Direct +0.59% Acquired 11.4% (price as of 2026-08-19)
Aug. 17, 2023 SELF P 1,000 $5.07 $5,070 203,202 Direct +0.49% Acquired 5.9% (price as of 2026-08-19)
May 15, 2023 SELF P 1,800 $5.13 $9,234 202,202 Direct +0.90% Acquired 4.7% (price as of 2026-08-19)
May 15, 2023 SELF P 1,500 $5.10 $7,650 200,402 Direct +0.75% Acquired 5.3% (price as of 2026-08-19)
May 15, 2023 SELF P 1,300 $5.15 $6,695 198,902 Direct +0.66% Acquired 4.3% (price as of 2026-08-19)
May 15, 2023 SELF P 200 $5.13 $1,026 197,602 Direct +0.10% Acquired 4.7% (price as of 2026-08-19)
May 15, 2023 SELF P 655 $5.15 $3,373 197,402 Direct +0.33% Acquired 4.3% (price as of 2026-08-19)
May 15, 2023 SELF P 100 $5.13 $513 196,747 Direct +0.05% Acquired 4.7% (price as of 2026-08-19)
May 15, 2023 SELF P 745 $5.10 $3,800 196,647 Direct +0.38% Acquired 5.3% (price as of 2026-08-19)
May 15, 2023 SELF P 1,500 $5.10 $7,650 195,902 Direct +0.77% Acquired 5.3% (price as of 2026-08-19)
Nov. 18, 2022 SELF P 900 $5.18 $4,662 179,637 Direct +0.50% Acquired 3.7% (price as of 2026-08-19)
Nov. 18, 2022 SELF P 1,100 $5.17 $5,687 178,737 Direct +0.62% Acquired 3.9% (price as of 2026-08-19)
Nov. 18, 2022 SELF P 900 $5.18 $4,662 177,637 Direct +0.51% Acquired 3.7% (price as of 2026-08-19)
Nov. 18, 2022 SELF P 100 $5.17 $517 176,737 Direct +0.06% Acquired 3.9% (price as of 2026-08-19)
Aug. 23, 2022 SELF P 600 $6.07 $3,642 176,637 Direct +0.34% Acquired -11.5% (price as of 2026-08-19)
Aug. 23, 2022 SELF P 1,400 $6.07 $8,498 176,037 Direct +0.80% Acquired -11.5% (price as of 2026-08-19)
Aug. 23, 2022 SELF P 1,400 $6.07 $8,498 174,637 Direct +0.81% Acquired -11.5% (price as of 2026-08-19)
Aug. 23, 2022 SELF P 1,400 $6.07 $8,498 173,237 Direct +0.81% Acquired -11.5% (price as of 2026-08-19)
May 20, 2022 SELF P 1,700 $5.74 $9,758 171,837 Direct +1.00% Acquired -6.4% (price as of 2026-08-19)
Aug. 24, 2021 SELF P 1,000 $5.12 $5,120 162,112 Direct +0.62% Acquired 4.9% (price as of 2026-08-19)
Aug. 20, 2021 SELF P 1,000 $5.10 $5,100 161,112 Direct +0.62% Acquired 5.3% (price as of 2026-08-19)
Aug. 20, 2021 SELF P 1,000 $5.10 $5,100 160,112 Direct +0.63% Acquired 5.3% (price as of 2026-08-19)
Aug. 20, 2021 SELF P 1,000 $5.10 $5,100 159,112 Direct +0.63% Acquired 5.3% (price as of 2026-08-19)
Aug. 20, 2021 SELF P 1,000 $5.10 $5,100 158,112 Direct +0.64% Acquired 5.3% (price as of 2026-08-19)
Nov. 20, 2020 SELF P 500 $4.00 $2,000 131,975 Direct +0.38% Acquired 34.3% (price as of 2026-08-19)
Nov. 20, 2020 SELF P 2,000 $4.00 $8,000 131,475 Direct +1.54% Acquired 34.3% (price as of 2026-08-19)
Nov. 19, 2020 SELF P 500 $4.00 $2,000 129,475 Direct +0.39% Acquired 34.3% (price as of 2026-08-19)
Nov. 19, 2020 SELF P 1,000 $4.00 $4,000 128,975 Direct +0.78% Acquired 34.3% (price as of 2026-08-19)
Nov. 19, 2020 SELF P 3,000 $4.00 $12,000 127,975 Direct +2.40% Acquired 34.3% (price as of 2026-08-19)
Nov. 19, 2020 SELF P 3,000 $4.00 $12,000 124,975 Direct +2.46% Acquired 34.3% (price as of 2026-08-19)
Aug. 19, 2020 SELF P 1,923 $3.92 $7,538 121,975 Direct +1.60% Acquired 37.0% (price as of 2026-08-19)
Aug. 19, 2020 SELF P 77 $3.92 $302 120,052 Direct +0.06% Acquired 37.0% (price as of 2026-08-19)
Aug. 19, 2020 SELF P 3,000 $3.92 $11,760 119,975 Direct +2.56% Acquired 37.0% (price as of 2026-08-19)
Aug. 19, 2020 SELF P 300 $3.92 $1,176 116,975 Direct +0.26% Acquired 37.0% (price as of 2026-08-19)
Aug. 19, 2020 SELF P 700 $3.85 $2,695 116,675 Direct +0.60% Acquired 39.5% (price as of 2026-08-19)
Aug. 19, 2020 SELF P 1,000 $3.91 $3,910 115,975 Direct +0.87% Acquired 37.3% (price as of 2026-08-19)
May 20, 2020 SELF P 550 $3.73 $2,052 102,976 Direct +0.54% Acquired 44.0% (price as of 2026-08-19)
May 20, 2020 SELF P 1,000 $3.71 $3,710 102,426 Direct +0.99% Acquired 44.7% (price as of 2026-08-19)
May 20, 2020 SELF P 2,000 $3.74 $7,480 101,426 Direct +2.01% Acquired 43.6% (price as of 2026-08-19)
May 28, 2019 SELF P 1,000 $3.70 $3,700 83,374 Direct +1.21% Acquired 45.1% (price as of 2026-08-19)
May 28, 2019 SELF P 1,000 $3.70 $3,700 82,734 Direct +1.22% Acquired 45.1% (price as of 2026-08-19)
May 18, 2018 SELF P 1,400 $4.18 $5,852 66,985 Direct +2.13% Acquired 28.5% (price as of 2026-08-19)
Aug. 23, 2017 SELF P 1,000 $4.88 $4,880 33,460 Direct +3.08% Acquired 10.0% (price as of 2026-08-19)
Aug. 23, 2017 SELF P 2,000 $4.89 $9,780 32,460 Direct +6.57% Acquired 9.8% (price as of 2026-08-19)
Nov. 30, 2016 SELF P 1,000 $5.00 $5,000 30,460 Direct +3.39% Acquired 7.4% (price as of 2026-08-19)
Aug. 23, 2016 SELF P 2,000 $5.50 $11,000 29,460 Direct +7.28% Acquired -2.4% (price as of 2026-08-19)
May 25, 2016 SELF P 200 $4.77 $954 27,270 Direct +0.74% Acquired 12.6% (price as of 2026-08-19)
May 24, 2016 SELF P 5,829 $4.70 $27,396 27,070 Direct +27.44% Acquired 14.3% (price as of 2026-08-19)
May 23, 2016 SELF P 1,000 $4.69 $4,690 21,241 Direct +4.94% Acquired 14.5% (price as of 2026-08-19)
March 27, 2012 SELF P 2,380 $4.07 $9,687 20,241 Direct +13.33% Acquired 31.9% (price as of 2026-08-19)
March 26, 2012 SELF P 7,620 $4.07 $31,013 17,861 Direct +74.41% Acquired 31.9% (price as of 2026-08-19)
March 16, 2012 SELF P 841 $4.02 $3,381 10,241 Direct +8.95% Acquired 33.6% (price as of 2026-08-19)
March 15, 2012 SELF P 1,000 $4.07 $4,070 9,400 Direct +11.90% Acquired 31.9% (price as of 2026-08-19)
March 9, 2012 SELF P 2,400 $4.00 $9,600 8,400 Direct +40.00% Acquired 34.3% (price as of 2026-08-19)
March 7, 2012 SELF P 5,000 $4.00 $20,000 6,000 Direct +500.00% Acquired 34.3% (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
Dec. 13, 2019 SELF Subscription Rights (right to buy) Common Stock — Dec. 13, 2019 21,308 Disposed
Nov. 17, 2003 52234 Incentive Stock Option Class A Common Stock (2,500) $1.51 Dec. 9, 2007 2,500 Disposed
Nov. 17, 2003 52234 Incentive Stock Option Class A Common Stock (15,000) $1.50 Dec. 11, 2005 15,000 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

SELF

CEO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 $467,000,447,000 $1,796,217,192 $128,748,273,879 — — — $7,976,675,252 $693,476,813,323
2021 — $14,500 — — — — — —
2020 — $13,731 — — — — — —

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.