Mark Besca
Insider
First SEC filing: Jan. 28, 2025 · Latest: June 17, 2026
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 15, 2026 | MKL | J | 81 | $1668.65 | $135,161 | 1,222 Direct | +7.10% | Acquired | 3.5% (price as of 2026-10-05) |
| May 20, 2026 | MKL | A | 89 | · | · | 1,141 Direct | +8.46% | Acquired | (price as of 2026-10-05) |
| May 14, 2026 | LVS | A | 3,948 | · | · | 8,694 Direct | +83.19% | Acquired | (price as of 2026-10-05) |
| May 29, 2025 | CLAR | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 21, 2025 | MKL | A | 88 | · | · | 1,052 Direct | +9.13% | Acquired | (price as of 2026-10-05) |
| May 15, 2025 | LVS | A | 4,746 | · | · | 4,746 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 27, 2025 | LVS | A | 8,136 | · | · | 8,136 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 5, 2024 | CLAR | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-05) |
| June 14, 2024 | MKL | J | 79 | $1389.66 | $109,783 | 964 Direct | +8.93% | Acquired | 24.2% (price as of 2026-10-05) |
| May 22, 2024 | MKL | A | 100 | · | · | 885 Direct | +12.74% | Acquired | (price as of 2026-10-05) |
| Nov. 3, 2023 | MKL | P | 50 | $1316.90 | $65,845 | 785 Direct | +6.80% | Acquired | 31.1% (price as of 2026-10-05) |
| June 15, 2023 | MKL | J | 91 | $1204.63 | $109,621 | 735 Direct | +14.13% | Acquired | 43.3% (price as of 2026-10-05) |
| May 17, 2023 | MKL | A | 122 | · | · | 644 Direct | +23.37% | Acquired | (price as of 2026-10-05) |
| May 13, 2022 | MKL | J | 92 | $1192.90 | $109,747 | 522 Direct | +21.40% | Acquired | 44.7% (price as of 2026-10-05) |
| May 11, 2022 | MKL | A | 129 | · | · | 430 Direct | +42.86% | Acquired | (price as of 2026-10-05) |
| May 14, 2021 | MKL | J | 86 | $1109.99 | $95,459 | 301 Direct | +40.00% | Acquired | 55.5% (price as of 2026-10-05) |
| May 10, 2021 | MKL | A | 103 | · | · | 215 Direct | +91.96% | Acquired | (price as of 2026-10-05) |
| Dec. 15, 2020 | MKL | J | 52 | $913.74 | $47,514 | 112 Direct | +86.67% | Acquired | 89.0% (price as of 2026-10-05) |
| Nov. 18, 2020 | MKL | A | 60 | · | · | 60 Direct | · | Acquired | (price as of 2026-10-05) |
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 |
|---|---|---|---|---|---|---|---|
| May 29, 2025 | CLAR | Stock Option (right to purchase) | Common Stock | $3.21 | May 29, 2035 | 20,000 | Acquired |
| Jan. 27, 2025 | LVS | Common Stock (Right to Buy) | Common Stock | $43.45 | Jan. 26, 2035 | 8,136 | Acquired |
| Dec. 5, 2024 | CLAR | Stock Option (right to purchase) | Common Stock, par value $0.0001 per share ("Common Stock") | $4.57 | Dec. 5, 2034 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.