Mark R Witkowski
Insider
First SEC filing: July 23, 2021 · Latest: July 23, 2021
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 12, 2026 | CNM | A | 18,372 | · | · | 51,119 Direct | +56.10% | Acquired | (price as of 2026-10-02) |
| March 12, 2026 | CNM | A | 131,382 | · | · | 131,382 Direct | · | Acquired | (price as of 2026-10-02) |
| March 11, 2026 | CNM | F | 1,685 | $49.16 | $82,835 | 32,747 Direct | -4.89% | Disposed | -15.9% (price as of 2026-10-02) |
| March 10, 2026 | CNM | F | 937 | $49.38 | $46,269 | 34,432 Direct | -2.65% | Disposed | -16.3% (price as of 2026-10-02) |
| March 9, 2026 | CNM | F | 478 | $49.96 | $23,881 | 35,369 Direct | -1.33% | Disposed | -17.2% (price as of 2026-10-02) |
| Aug. 18, 2025 | CNM | C | 100,000 | · | · | 135,847 Direct | +278.96% | Acquired | (price as of 2026-10-02) |
| Aug. 18, 2025 | CNM | S 10b5-1 | 100,000 | $64.08 | $6,408,000 | 35,847 Direct | -73.61% | Disposed | -35.5% (price as of 2026-10-02) |
| Aug. 18, 2025 | CNM | J | 100,000 | · | · | 616,250 Indirect | -13.96% | Disposed | (price as of 2026-10-02) |
| Aug. 18, 2025 | CNM | J | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 18, 2025 | CNM | C | 100,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| July 17, 2025 | CNM | C | 100,000 | · | · | 135,847 Direct | +278.96% | Acquired | (price as of 2026-10-02) |
| July 17, 2025 | CNM | S 10b5-1 | 72,331 | $61.12 | $4,420,871 | 63,516 Direct | -53.24% | Disposed | -32.3% (price as of 2026-10-02) |
| July 17, 2025 | CNM | S 10b5-1 | 27,669 | $61.63 | $1,705,240 | 35,847 Direct | -43.56% | Disposed | -32.9% (price as of 2026-10-02) |
| July 17, 2025 | CNM | J | 100,000 | · | · | 716,250 Indirect | -12.25% | Disposed | (price as of 2026-10-02) |
| July 17, 2025 | CNM | J | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 17, 2025 | CNM | C | 100,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 31, 2025 | CNM | A | 10,092 | · | · | 35,847 Direct | +39.18% | Acquired | (price as of 2026-10-02) |
| March 31, 2025 | CNM | A | 73,458 | · | · | 73,458 Direct | · | Acquired | (price as of 2026-10-02) |
| March 13, 2025 | CNM | A | 7,296 | · | · | 25,755 Direct | +39.53% | Acquired | (price as of 2026-10-02) |
| March 13, 2025 | CNM | A | 53,094 | · | · | 53,094 Direct | · | Acquired | (price as of 2026-10-02) |
| March 11, 2025 | CNM | F | 925 | $46.55 | $43,059 | 18,459 Direct | -4.77% | Disposed | -11.2% (price as of 2026-10-02) |
| March 10, 2025 | CNM | F | 996 | $46.69 | $46,503 | 19,384 Direct | -4.89% | Disposed | -11.4% (price as of 2026-10-02) |
| March 7, 2025 | CNM | F | 536 | $47.87 | $25,658 | 20,380 Direct | -2.56% | Disposed | -13.6% (price as of 2026-10-02) |
| May 8, 2024 | CNM | C | 50,000 | · | · | 73,898 Direct | +209.22% | Acquired | (price as of 2026-10-02) |
| May 8, 2024 | CNM | S 10b5-1 | 50,000 | $59.50 | $2,975,000 | 23,898 Direct | -67.66% | Disposed | -30.5% (price as of 2026-10-02) |
| May 8, 2024 | CNM | J | 50,000 | · | · | 816,250 Indirect | -5.77% | Disposed | (price as of 2026-10-02) |
| May 8, 2024 | CNM | J | 50,000 | · | · | 50,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 8, 2024 | CNM | C | 50,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| April 8, 2024 | CNM | C | 50,000 | · | · | 73,898 Direct | +209.22% | Acquired | (price as of 2026-10-02) |
| April 8, 2024 | CNM | S 10b5-1 | 50,000 | $58.51 | $2,925,500 | 23,898 Direct | -67.66% | Disposed | -29.3% (price as of 2026-10-02) |
| April 8, 2024 | CNM | J | 50,000 | · | · | 866,250 Indirect | -5.46% | Disposed | (price as of 2026-10-02) |
| April 8, 2024 | CNM | J | 50,000 | · | · | 50,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 8, 2024 | CNM | C | 50,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 11, 2024 | CNM | F | 999 | $48.29 | $48,242 | 21,845 Direct | -4.37% | Disposed | -14.4% (price as of 2026-10-02) |
| March 11, 2024 | CNM | F | 929 | $48.29 | $44,861 | 20,916 Direct | -4.25% | Disposed | -14.4% (price as of 2026-10-02) |
| March 7, 2024 | CNM | A | 4,677 | · | · | 23,898 Direct | +24.33% | Acquired | (price as of 2026-10-02) |
| March 7, 2024 | CNM | A | 36,726 | · | · | 36,726 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 15, 2023 | CNM | C | 40,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 15, 2023 | CNM | J | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 15, 2023 | CNM | J | 40,000 | · | · | 916,250 Indirect | -4.18% | Disposed | (price as of 2026-10-02) |
| Nov. 15, 2023 | CNM | S 10b5-1 | 40,000 | $34.01 | $1,360,400 | 19,221 Direct | -67.54% | Disposed | 21.6% (price as of 2026-10-02) |
| Nov. 15, 2023 | CNM | C | 40,000 | · | · | 59,221 Direct | +208.11% | Acquired | (price as of 2026-10-02) |
| Nov. 9, 2023 | CNM | C | 20,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 9, 2023 | CNM | J | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 9, 2023 | CNM | J | 20,000 | · | · | 956,250 Indirect | -2.05% | Disposed | (price as of 2026-10-02) |
| Nov. 9, 2023 | CNM | S 10b5-1 | 20,000 | $32.10 | $642,000 | 19,221 Direct | -50.99% | Disposed | 28.8% (price as of 2026-10-02) |
| Nov. 9, 2023 | CNM | C | 20,000 | · | · | 39,221 Direct | +104.05% | Acquired | (price as of 2026-10-02) |
| Oct. 4, 2023 | CNM | C | 20,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Oct. 4, 2023 | CNM | J | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 4, 2023 | CNM | J | 20,000 | · | · | 976,250 Indirect | -2.01% | Disposed | (price as of 2026-10-02) |
| Oct. 4, 2023 | CNM | S 10b5-1 | 20,000 | $30.02 | $600,400 | 19,221 Direct | -50.99% | Disposed | 37.7% (price as of 2026-10-02) |
| Oct. 4, 2023 | CNM | C | 20,000 | · | · | 39,221 Direct | +104.05% | Acquired | (price as of 2026-10-02) |
| Sept. 25, 2023 | CNM | C | 39,397 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Sept. 25, 2023 | CNM | J | 39,397 | · | · | 39,397 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 25, 2023 | CNM | J | 39,397 | · | · | 996,250 Indirect | -3.80% | Disposed | (price as of 2026-10-02) |
| Sept. 25, 2023 | CNM | S 10b5-1 | 40,000 | $28.44 | $1,137,600 | 19,221 Direct | -67.54% | Disposed | 45.4% (price as of 2026-10-02) |
| Sept. 25, 2023 | CNM | C | 39,397 | · | · | 59,221 Direct | +198.73% | Acquired | (price as of 2026-10-02) |
| Sept. 25, 2023 | CNM | J | 603 | · | · | 19,824 Direct | +3.14% | Acquired | (price as of 2026-10-02) |
| Sept. 25, 2023 | CNM | J | 603 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| March 13, 2023 | CNM | F | 1,054 | $21.45 | $22,608 | 22,844 Direct | -4.41% | Disposed | 92.8% (price as of 2026-10-02) |
| March 10, 2023 | CNM | A | 79,560 | · | · | 79,560 Direct | · | Acquired | (price as of 2026-10-02) |
| March 10, 2023 | CNM | A | 9,669 | · | · | 19,221 Direct | +101.22% | Acquired | (price as of 2026-10-02) |
| March 11, 2022 | CNM | A | 69,714 | · | · | 69,714 Direct | · | Acquired | (price as of 2026-10-02) |
| March 11, 2022 | CNM | A | 9,552 | · | · | 9,552 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| March 12, 2026 | CNM | Options (Rights to Buy) | Class A Common Stock | $47.63 | March 12, 2036 | 131,382 | Acquired |
| Aug. 18, 2025 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 100,000 | Disposed |
| Aug. 18, 2025 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 100,000 | Acquired |
| Aug. 18, 2025 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 100,000 | Disposed |
| July 17, 2025 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 100,000 | Disposed |
| July 17, 2025 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 100,000 | Acquired |
| July 17, 2025 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 100,000 | Disposed |
| March 31, 2025 | CNM | Options (Rights to Buy) | Class A Common Stock | $48.31 | March 31, 2035 | 73,458 | Acquired |
| March 13, 2025 | CNM | Options (Rights to Buy) | Class A Common Stock | $46.27 | March 13, 2035 | 53,094 | Acquired |
| May 8, 2024 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 50,000 | Disposed |
| May 8, 2024 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 50,000 | Acquired |
| May 8, 2024 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 50,000 | Disposed |
| April 8, 2024 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 50,000 | Disposed |
| April 8, 2024 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 50,000 | Acquired |
| April 8, 2024 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 50,000 | Disposed |
| March 7, 2024 | CNM | Options (Rights to Buy) | Class A Common Stock | $50.12 | March 7, 2034 | 36,726 | Acquired |
| Nov. 15, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 40,000 | Disposed |
| Nov. 15, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 40,000 | Acquired |
| Nov. 15, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 40,000 | Disposed |
| Nov. 9, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 20,000 | Disposed |
| Nov. 9, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 20,000 | Acquired |
| Nov. 9, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 20,000 | Disposed |
| Oct. 4, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 20,000 | Disposed |
| Oct. 4, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 20,000 | Acquired |
| Oct. 4, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 20,000 | Disposed |
| Sept. 25, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 39,397 | Disposed |
| Sept. 25, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 39,397 | Acquired |
| Sept. 25, 2023 | CNM | Class B Common Stock and Limited Partnership Interests | Class A Common Stock | · | · | 39,397 | Disposed |
| March 10, 2023 | CNM | Options (Rights to Buy) | Class A Common Stock | $22.11 | March 10, 2033 | 79,560 | Acquired |
| March 11, 2022 | CNM | Options (Rights to Buy) | Class A Common Stock | $20.81 | March 10, 2032 | 69,714 | 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.
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $786,539 | · | $5,825,167 | $2,474,832 | $194,520 | · | $46,048 | $9,327,106 |
| 2024 | $610,192 | · | $234,411 | $703,150 | $248,320 | · | $34,813 | $1,830,886 |
| 2022 | $521,923 | · | $198,777 | $596,258 | $636,000 | · | $110,456 | $2,063,414 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.