Walker, Mark D.
Insider
Activist
First SEC filing: Feb. 17, 2022 · Latest: Dec. 19, 2025
Insider at
Insider transactions
0 buys (P)
5 sells (S)
Net: $-69,760
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 |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 2, 2026 | DRCT | S | 500 | $1.90 | $950 | 7,864 Indirect | -5.98% | Disposed | -52.1% (price as of 2026-10-02) |
| Sept. 1, 2026 | DRCT | S | 1,636 | $2.06 | $3,370 | 8,364 Indirect | -16.36% | Disposed | -55.8% (price as of 2026-10-02) |
| Aug. 27, 2026 | DRCT | C | 10,000 | · | · | 10,000 Indirect | · | Acquired | (price as of 2026-10-02) |
| Aug. 27, 2026 | DRCT | C | 10,000 | · | · | 11,279 Indirect | -46.99% | Disposed | (price as of 2026-10-02) |
| June 12, 2026 | DRCT | S 10b5-1 | 1,363 | $2.80 | $3,816 | 0 Indirect | -100.00% | Disposed | -67.5% (price as of 2026-10-02) |
| April 1, 2026 | DRCT | M | 67 | · | · | 136 Direct | -33.00% | Disposed | (price as of 2026-10-02) |
| April 1, 2026 | DRCT | F | 20 | $3.29 | $66 | 221 Direct | -8.30% | Disposed | -93.1% (price as of 2026-10-02) |
| April 1, 2026 | DRCT | M | 67 | · | · | 241 Direct | +38.51% | Acquired | (price as of 2026-10-02) |
| March 24, 2026 | DRCT | A | 8,750 | · | · | 8,750 Direct | · | Acquired | (price as of 2026-10-02) |
| March 20, 2026 | DRCT | M | 45 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 20, 2026 | DRCT | F | 14 | $3.52 | $49 | 174 Direct | -7.45% | Disposed | -93.5% (price as of 2026-10-02) |
| March 20, 2026 | DRCT | M | 45 | · | · | 188 Direct | +31.47% | Acquired | (price as of 2026-10-02) |
| Jan. 24, 2026 | DRCT | M | 204 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 24, 2026 | DRCT | F | 61 | $16.48 | $1,005 | 143 Direct | -29.90% | Disposed | -98.6% (price as of 2026-10-02) |
| Jan. 24, 2026 | DRCT | M | 204 | · | · | 204 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 4, 2025 | DRCT | C | 300,000 | · | · | 300,000 Indirect | · | Acquired | (price as of 2026-10-02) |
| Dec. 4, 2025 | DRCT | C | 300,000 | · | · | 4,681,500 Indirect | -6.02% | Disposed | (price as of 2026-10-02) |
| Nov. 14, 2025 | DRCT | S | 245,008 | $0.21 | $51,452 | 0 Indirect | -100.00% | Disposed | -98.0% (price as of 2026-10-02) |
| Nov. 13, 2025 | DRCT | S | 27,492 | $0.37 | $10,172 | 245,008 Indirect | -10.09% | Disposed | -98.9% (price as of 2026-10-02) |
| Sept. 11, 2025 | DRCT | C | 272,500 | · | · | 272,500 Indirect | · | Acquired | (price as of 2026-10-02) |
| Sept. 11, 2025 | DRCT | C | 272,500 | · | · | 4,981,500 Indirect | -5.19% | Disposed | (price as of 2026-10-02) |
| Aug. 19, 2025 | DRCT | S | 23,000 | $0.39 | $8,970 | 0 Indirect | -100.00% | Disposed | -98.9% (price as of 2026-10-02) |
| Aug. 18, 2025 | DRCT | S | 24,313 | $0.39 | $9,482 | 23,000 Indirect | -51.39% | Disposed | -98.9% (price as of 2026-10-02) |
| Aug. 15, 2025 | DRCT | S | 22,369 | $0.41 | $9,171 | 0 Direct | -100.00% | Disposed | -99.0% (price as of 2026-10-02) |
| July 23, 2025 | DRCT | S 10b5-1 | 5,567 | $0.51 | $2,839 | 47,313 Indirect | -10.53% | Disposed | -99.2% (price as of 2026-10-02) |
| July 22, 2025 | DRCT | S 10b5-1 | 15,470 | $0.51 | $7,890 | 52,880 Indirect | -22.63% | Disposed | -99.2% (price as of 2026-10-02) |
| July 21, 2025 | DRCT | S 10b5-1 | 16,735 | $0.52 | $8,702 | 68,350 Indirect | -19.67% | Disposed | -99.2% (price as of 2026-10-02) |
| July 18, 2025 | DRCT | S 10b5-1 | 19,777 | $0.51 | $10,086 | 85,085 Indirect | -18.86% | Disposed | -99.2% (price as of 2026-10-02) |
| July 17, 2025 | DRCT | S 10b5-1 | 19,315 | $0.52 | $10,044 | 104,862 Indirect | -15.55% | Disposed | -99.2% (price as of 2026-10-02) |
| July 16, 2025 | DRCT | S 10b5-1 | 11,603 | $0.53 | $6,150 | 124,177 Indirect | -8.55% | Disposed | -99.2% (price as of 2026-10-02) |
| July 15, 2025 | DRCT | S 10b5-1 | 8,066 | $0.54 | $4,356 | 135,780 Indirect | -5.61% | Disposed | -99.2% (price as of 2026-10-02) |
| July 14, 2025 | DRCT | S 10b5-1 | 21,154 | $0.55 | $11,635 | 143,846 Indirect | -12.82% | Disposed | -99.2% (price as of 2026-10-02) |
| June 18, 2025 | DRCT | C | 165,000 | · | · | 165,000 Indirect | · | Acquired | (price as of 2026-10-02) |
| June 18, 2025 | DRCT | C | 165,000 | · | · | 5,254,000 Indirect | -3.04% | Disposed | (price as of 2026-10-02) |
| June 13, 2025 | DRCT | S 10b5-1 | 6,986 | $0.51 | $3,563 | 0 Indirect | -100.00% | Disposed | -99.2% (price as of 2026-10-02) |
| June 12, 2025 | DRCT | S 10b5-1 | 11,574 | $0.53 | $6,134 | 6,986 Indirect | -62.36% | Disposed | -99.2% (price as of 2026-10-02) |
| June 11, 2025 | DRCT | S 10b5-1 | 9,763 | $0.53 | $5,174 | 18,560 Indirect | -34.47% | Disposed | -99.2% (price as of 2026-10-02) |
| June 10, 2025 | DRCT | M | 20,300 | · | · | 27,313 Direct | +289.46% | Acquired | (price as of 2026-10-02) |
| June 10, 2025 | DRCT | F | 4,944 | $0.56 | $2,769 | 22,369 Direct | -18.10% | Disposed | -99.3% (price as of 2026-10-02) |
| June 10, 2025 | DRCT | M | 20,300 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| April 17, 2025 | DRCT | S 10b5-1 | 8,700 | $0.54 | $4,698 | 28,323 Indirect | -23.50% | Disposed | -99.2% (price as of 2026-10-02) |
| April 1, 2025 | DRCT | A | 45,000 | · | · | 45,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 1, 2025 | DRCT | A | 45,000 | · | · | 45,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 27, 2025 | DRCT | S 10b5-1 | 6,119 | $0.75 | $4,589 | 37,033 Indirect | -14.18% | Disposed | -99.4% (price as of 2026-10-02) |
| March 26, 2025 | DRCT | C | 70,000 | · | · | 70,640 Indirect | +10937.50% | Acquired | (price as of 2026-10-02) |
| March 26, 2025 | DRCT | S 10b5-1 | 19,778 | $0.78 | $15,427 | 43,152 Indirect | -31.43% | Disposed | -99.5% (price as of 2026-10-02) |
| March 26, 2025 | DRCT | C | 70,000 | · | · | 5,419,000 Indirect | -1.28% | Disposed | (price as of 2026-10-02) |
| March 25, 2025 | DRCT | S 10b5-1 | 7,710 | $0.76 | $5,860 | 62,930 Indirect | -10.91% | Disposed | -99.5% (price as of 2026-10-02) |
| March 24, 2025 | DRCT | S 10b5-1 | 10,448 | $0.76 | $7,940 | 640 Indirect | -94.23% | Disposed | -99.5% (price as of 2026-10-02) |
| March 21, 2025 | DRCT | S 10b5-1 | 5,830 | $0.76 | $4,431 | 11,088 Indirect | -34.46% | Disposed | -99.5% (price as of 2026-10-02) |
| March 20, 2025 | DRCT | M | 9,970 | · | · | 9,970 Direct | · | Acquired | (price as of 2026-10-02) |
| March 20, 2025 | DRCT | F | 2,957 | $0.79 | $2,336 | 7,013 Direct | -29.66% | Disposed | -99.5% (price as of 2026-10-02) |
| March 20, 2025 | DRCT | M | 9,970 | · | · | 9,970 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| March 20, 2025 | DRCT | S 10b5-1 | 14,600 | $0.79 | $11,534 | 16,918 Indirect | -46.32% | Disposed | -99.5% (price as of 2026-10-02) |
| March 19, 2025 | DRCT | S 10b5-1 | 10,960 | $0.80 | $8,768 | 31,518 Indirect | -25.80% | Disposed | -99.5% (price as of 2026-10-02) |
| March 18, 2025 | DRCT | S 10b5-1 | 5,109 | $0.80 | $4,087 | 42,478 Indirect | -10.74% | Disposed | -99.5% (price as of 2026-10-02) |
| March 17, 2025 | DRCT | S 10b5-1 | 10,800 | $0.73 | $7,884 | 47,587 Indirect | -18.50% | Disposed | -99.4% (price as of 2026-10-02) |
| March 14, 2025 | DRCT | S 10b5-1 | 15,900 | $0.77 | $12,243 | 58,387 Indirect | -21.40% | Disposed | -99.5% (price as of 2026-10-02) |
| March 13, 2025 | DRCT | S 10b5-1 | 3,864 | $0.81 | $3,130 | 74,287 Indirect | -4.94% | Disposed | -99.5% (price as of 2026-10-02) |
| March 12, 2025 | DRCT | S 10b5-1 | 14,870 | $0.83 | $12,342 | 78,151 Indirect | -15.99% | Disposed | -99.5% (price as of 2026-10-02) |
| March 11, 2025 | DRCT | S 10b5-1 | 11,302 | $0.92 | $10,398 | 93,021 Indirect | -10.83% | Disposed | -99.6% (price as of 2026-10-02) |
| Jan. 24, 2025 | DRCT | A | 45,000 | · | · | 45,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 24, 2025 | DRCT | A | 45,000 | · | · | 45,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 16, 2024 | DRCT | S | 8,107 | $0.70 | $5,675 | 137,300 Indirect | -5.58% | Disposed | -99.4% (price as of 2026-10-02) |
| Dec. 13, 2024 | DRCT | D | 25,435 | · | · | 111,865 Indirect | -18.53% | Disposed | (price as of 2026-10-02) |
| Dec. 13, 2024 | DRCT | D | 7,542 | · | · | 104,323 Indirect | -6.74% | Disposed | (price as of 2026-10-02) |
| Dec. 13, 2024 | DRCT | D | 40,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 13, 2024 | DRCT | D | 9,970 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 13, 2024 | DRCT | S | 22,793 | $0.73 | $16,639 | 145,407 Indirect | -13.55% | Disposed | -99.4% (price as of 2026-10-02) |
| Dec. 12, 2024 | DRCT | S | 6,800 | $0.82 | $5,576 | 168,200 Indirect | -3.89% | Disposed | -99.5% (price as of 2026-10-02) |
| Dec. 11, 2024 | DRCT | S | 15,000 | $0.85 | $12,750 | 175,000 Indirect | -7.89% | Disposed | -99.5% (price as of 2026-10-02) |
| Dec. 10, 2024 | DRCT | S | 10,000 | $1.01 | $10,100 | 190,000 Indirect | -5.00% | Disposed | -99.6% (price as of 2026-10-02) |
| Dec. 5, 2024 | DRCT | S | 8,763 | $0.92 | $8,062 | 0 Direct | -100.00% | Disposed | -99.6% (price as of 2026-10-02) |
| Dec. 4, 2024 | DRCT | S | 8,000 | $1.01 | $8,080 | 8,763 Direct | -47.72% | Disposed | -99.6% (price as of 2026-10-02) |
| Dec. 3, 2024 | DRCT | S | 3,404 | $1.15 | $3,915 | 16,763 Direct | -16.88% | Disposed | -99.6% (price as of 2026-10-02) |
| Dec. 2, 2024 | DRCT | S | 7,500 | $1.20 | $9,000 | 20,167 Direct | -27.11% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 29, 2024 | DRCT | S | 8,647 | $1.20 | $10,376 | 27,667 Direct | -23.81% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 27, 2024 | DRCT | S | 8,000 | $1.25 | $10,000 | 36,314 Direct | -18.05% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 26, 2024 | DRCT | S | 6,336 | $1.30 | $8,237 | 44,314 Direct | -12.51% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 25, 2024 | DRCT | S | 6,000 | $1.34 | $8,040 | 50,650 Direct | -10.59% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 22, 2024 | DRCT | S | 5,000 | $1.30 | $6,500 | 56,650 Direct | -8.11% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 19, 2024 | DRCT | S | 5,000 | $1.50 | $7,500 | 61,650 Direct | -7.50% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 18, 2024 | DRCT | S | 3,401 | $1.55 | $5,272 | 66,650 Direct | -4.86% | Disposed | -99.7% (price as of 2026-10-02) |
| Nov. 15, 2024 | DRCT | S | 7,240 | $1.82 | $13,177 | 70,051 Direct | -9.37% | Disposed | -99.8% (price as of 2026-10-02) |
| June 14, 2024 | DRCT | F | 7,989 | $2.64 | $21,091 | 44,369 Direct | -15.26% | Disposed | -99.8% (price as of 2026-10-02) |
| June 10, 2024 | DRCT | M | 20,300 | · | · | 20,300 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| June 10, 2024 | DRCT | M | 20,300 | · | · | 52,358 Direct | +63.32% | Acquired | (price as of 2026-10-02) |
| April 1, 2024 | DRCT | F | 2,428 | $15.24 | $37,003 | 64,980 Direct | -3.60% | Disposed | -100.0% (price as of 2026-10-02) |
| April 1, 2024 | DRCT | F | 14,565 | $15.24 | $221,971 | 67,408 Direct | -17.77% | Disposed | -100.0% (price as of 2026-10-02) |
| March 20, 2024 | DRCT | M | 9,970 | · | · | 19,940 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| March 20, 2024 | DRCT | M | 40,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 20, 2024 | DRCT | M | 9,970 | · | · | 81,973 Direct | +13.85% | Acquired | (price as of 2026-10-02) |
| March 20, 2024 | DRCT | M | 40,000 | · | · | 72,003 Direct | +124.99% | Acquired | (price as of 2026-10-02) |
| March 18, 2024 | DRCT | F | 5,803 | $28.87 | $167,533 | 32,058 Direct | -15.33% | Disposed | -100.0% (price as of 2026-10-02) |
| March 11, 2024 | DRCT | A | 22,505 | · | · | 37,861 Direct | +146.56% | Acquired | (price as of 2026-10-02) |
| Dec. 5, 2023 | DRCT | C | 200,000 | · | · | 5,489,000 Indirect | -3.52% | Disposed | (price as of 2026-10-02) |
| Dec. 5, 2023 | DRCT | C | 200,000 | · | · | 200,000 Indirect | · | Acquired | (price as of 2026-10-02) |
| June 10, 2023 | DRCT | M | 20,300 | · | · | 40,600 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| June 10, 2023 | DRCT | F | 4,944 | $3.25 | $16,068 | 15,356 Direct | -24.35% | Disposed | -99.9% (price as of 2026-10-02) |
| June 10, 2023 | DRCT | M | 20,300 | · | · | 20,300 Direct | · | Acquired | (price as of 2026-10-02) |
Showing latest 100 of 110 transactions
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 |
|---|---|---|---|---|---|---|---|
| Aug. 27, 2026 | DRCT | Class A Common Units of Direct Digital Holdings LLC | Class A Common Stock, par value $0.001 per share | · | · | 10,000 | Disposed |
| April 1, 2026 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 67 | Disposed |
| March 24, 2026 | DRCT | Employee Stock Options (right to buy) | Class A Common Stock, par value $0.001 per share | · | March 24, 2036 | 8,750 | Acquired |
| March 20, 2026 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 45 | Disposed |
| Jan. 24, 2026 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 204 | Disposed |
| Dec. 4, 2025 | DRCT | Class A Common Units of Direct Digital Holdings LLC | Class A Common Stock, par value $0.001 per share | · | · | 300,000 | Disposed |
| Sept. 11, 2025 | DRCT | Class A Common Units of Direct Digital Holdings LLC | Class A Common Stock, par value $0.001 per share | · | · | 272,500 | Disposed |
| June 18, 2025 | DRCT | Class A Common Units of Direct Digital Holdings LLC | Class A Common Stock, par value $0.001 per share | · | · | 165,000 | Disposed |
| June 10, 2025 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 20,300 | Disposed |
| April 1, 2025 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 45,000 | Acquired |
| April 1, 2025 | DRCT | Employee Stock Options (right to buy) | Class A Common Stock, par value $0.001 per share | $0.64 | April 1, 2035 | 45,000 | Acquired |
| March 26, 2025 | DRCT | Class A Common Units of Direct Digital Holdings LLC | Class A Common Stock, par value $0.001 per share | · | · | 70,000 | Disposed |
| March 20, 2025 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 9,970 | Disposed |
| Jan. 24, 2025 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 45,000 | Acquired |
| Jan. 24, 2025 | DRCT | Employee Stock Options (right to buy) | Class A Common Stock, par value $0.001 per share | $1.38 | Jan. 24, 2035 | 45,000 | Acquired |
| Dec. 13, 2024 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 40,000 | Disposed |
| Dec. 13, 2024 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 9,970 | Disposed |
| June 10, 2024 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 20,300 | Disposed |
| March 20, 2024 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 9,970 | Disposed |
| March 20, 2024 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 40,000 | Disposed |
| Dec. 5, 2023 | DRCT | Class A Common Units of Direct Digital Holdings LLC | Class A Common Stock, par value $0.001 per share | · | · | 200,000 | Disposed |
| June 10, 2023 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 20,300 | Disposed |
| June 10, 2023 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 20,097 | Disposed |
| March 20, 2023 | DRCT | Employee Stock Options (right to buy) | Class A Common Stock, par value $0.001 per share | $3.96 | March 20, 2033 | 29,910 | Acquired |
| March 20, 2023 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 29,910 | Acquired |
| March 20, 2023 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 40,000 | Acquired |
| Nov. 29, 2022 | DRCT | Warrants (right to buy) | Class A Common Stock | $5.50 | Feb. 15, 2027 | 5,320 | Acquired |
| Nov. 28, 2022 | DRCT | Warrants (right to buy) | Class A Common Stock | $5.50 | Feb. 15, 2027 | 8,688 | Acquired |
| Nov. 23, 2022 | DRCT | Warrants (right to buy) | Class A Common Stock | $5.50 | Feb. 15, 2027 | 13,251 | Acquired |
| June 10, 2022 | DRCT | Employee Stock Options (right to buy) | Class A Common Stock, par value $0.001 per share | $1.62 | June 10, 2032 | 60,900 | Acquired |
| June 10, 2022 | DRCT | Restricted Stock Units | Class A Common Stock, par value $0.001 per share | · | · | 60,900 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 17, 2022 | DRCT | Class A Common Units of Direct Digital Holdings LLC | 5,689,000 | Indirect |