William Landman
Insider
First SEC filing: Nov. 16, 2009 · Latest: June 9, 2021
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs the latest weekly close (updated to the current quote in your browser when available), 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 |
|---|---|---|---|---|---|---|---|---|---|
| Oct. 1, 2026 | ZETA | A | 791 | $31.57 | $24,972 | 250,854 Direct | +0.32% | Acquired | 7.6% (price as of ) |
| Aug. 12, 2026 | ZETA | D | 22,153 | $28.55 | $632,468 | 250,063 Direct | -8.14% | Disposed | 19.0% (price as of ) |
| July 1, 2026 | ZETA | A | 7,197 | · | · | 270,946 Direct | +2.73% | Acquired | |
| July 1, 2026 | ZETA | A | 1,270 | $19.68 | $24,994 | 272,216 Direct | +0.47% | Acquired | 72.7% (price as of ) |
| April 1, 2026 | ZETA | A | 1,570 | $15.92 | $24,994 | 263,749 Direct | +0.60% | Acquired | 113.4% (price as of ) |
| Jan. 1, 2026 | ZETA | A | 1,228 | $20.35 | $24,990 | 262,179 Direct | +0.47% | Acquired | 67.0% (price as of ) |
| Nov. 19, 2025 | ZETA | G | 12,000 | · | · | 260,951 Direct | -4.40% | Disposed | |
| Oct. 1, 2025 | ZETA | A | 1,258 | $19.87 | $24,996 | 272,951 Direct | +0.46% | Acquired | 71.0% (price as of ) |
| July 1, 2025 | ZETA | A | 9,907 | · | · | 270,079 Direct | +3.81% | Acquired | |
| July 1, 2025 | ZETA | A | 1,614 | $15.49 | $25,001 | 271,693 Direct | +0.60% | Acquired | 119.4% (price as of ) |
| April 1, 2025 | ZETA | A | 1,843 | $13.56 | $24,991 | 260,172 Direct | +0.71% | Acquired | 150.6% (price as of ) |
| March 13, 2025 | ZETA | D | 33,330 | $13.70 | $456,621 | 0 Indirect | -100.00% | Disposed | 148.0% (price as of ) |
| Jan. 1, 2025 | ZETA | A | 1,389 | $17.99 | $24,988 | 258,329 Direct | +0.54% | Acquired | 88.9% (price as of ) |
| Dec. 12, 2024 | ZETA | D | 33,334 | $21.73 | $724,348 | 33,330 Indirect | -50.00% | Disposed | 56.4% (price as of ) |
| Nov. 18, 2024 | ZETA | P | 8,010 | $18.55 | $148,586 | 256,940 Direct | +3.22% | Acquired | 83.2% (price as of ) |
| Oct. 1, 2024 | ZETA | A | 838 | $29.83 | $24,998 | 248,930 Direct | +0.34% | Acquired | 13.9% (price as of ) |
| July 1, 2024 | ZETA | A | 8,241 | · | · | 246,676 Direct | +3.46% | Acquired | |
| July 1, 2024 | ZETA | A | 1,416 | $17.65 | $24,992 | 248,092 Direct | +0.57% | Acquired | 92.5% (price as of ) |
| May 16, 2024 | ZETA | D | 150,000 | $17.10 | $2,565,000 | 238,435 Direct | -38.62% | Disposed | 98.7% (price as of ) |
| May 16, 2024 | ZETA | D | 16,667 | $17.10 | $285,006 | 66,664 Indirect | -20.00% | Disposed | 98.7% (price as of ) |
| April 1, 2024 | ZETA | A | 2,312 | $10.81 | $24,993 | 388,435 Direct | +0.60% | Acquired | 214.3% (price as of ) |
| March 7, 2024 | ZETA | D | 97,752 | $10.23 | $1,000,003 | 386,123 Direct | -20.20% | Disposed | 232.2% (price as of ) |
| March 7, 2024 | ZETA | D | 30,851 | $10.23 | $315,606 | 83,331 Indirect | -27.02% | Disposed | 232.2% (price as of ) |
| Jan. 1, 2024 | ZETA | A | 2,834 | $8.82 | $24,996 | 483,875 Direct | +0.59% | Acquired | 285.3% (price as of ) |
| Dec. 13, 2023 | ZETA | D | 1,940 | $8.58 | $16,645 | 0 Indirect | -100.00% | Disposed | 296.0% (price as of ) |
| Dec. 13, 2023 | ZETA | D | 37,137 | $8.58 | $318,635 | 0 Indirect | -100.00% | Disposed | 296.0% (price as of ) |
| Dec. 13, 2023 | ZETA | D | 1,850 | $8.58 | $15,873 | 0 Indirect | -100.00% | Disposed | 296.0% (price as of ) |
| Dec. 13, 2023 | ZETA | D | 185 | $8.58 | $1,587 | 0 Indirect | -100.00% | Disposed | 296.0% (price as of ) |
| Dec. 13, 2023 | ZETA | D | 47,895 | $8.58 | $410,939 | 0 Indirect | -100.00% | Disposed | 296.0% (price as of ) |
| Dec. 13, 2023 | ZETA | D | 85,818 | $8.58 | $736,318 | 114,182 Indirect | -42.91% | Disposed | 296.0% (price as of ) |
| Nov. 22, 2023 | ZETA | D | 50,000 | $8.66 | $433,000 | 481,041 Direct | -9.42% | Disposed | 292.4% (price as of ) |
| Oct. 1, 2023 | ZETA | A | 2,994 | $8.35 | $25,000 | 531,041 Direct | +0.57% | Acquired | 306.9% (price as of ) |
| July 1, 2023 | ZETA | A | 17,564 | · | · | 525,120 Direct | +3.46% | Acquired | |
| July 1, 2023 | ZETA | A | 2,927 | $8.54 | $24,997 | 528,047 Direct | +0.56% | Acquired | 297.9% (price as of ) |
| April 1, 2023 | ZETA | A | 2,308 | $10.83 | $24,996 | 507,556 Direct | +0.46% | Acquired | 213.8% (price as of ) |
| Jan. 1, 2023 | ZETA | A | 3,060 | $8.17 | $25,000 | 505,248 Direct | +0.61% | Acquired | 315.9% (price as of ) |
| Nov. 16, 2022 | ZETA | J | 1,303,533 | · | · | 0 Indirect | -100.00% | Disposed | |
| Nov. 16, 2022 | ZETA | J | 405,156 | · | · | 0 Indirect | -100.00% | Disposed | |
| Oct. 1, 2022 | ZETA | A | 3,782 | $6.61 | $24,999 | 46,400 Direct | +8.87% | Acquired | 414.1% (price as of ) |
| July 1, 2022 | ZETA | A | 35,128 | · | · | 37,088 Direct | +1792.24% | Acquired | |
| July 1, 2022 | ZETA | A | 5,530 | $4.52 | $24,996 | 42,618 Direct | +14.91% | Acquired | 651.8% (price as of ) |
| July 1, 2022 | ZETA | J | 9,815,184 | · | · | 200,000 Indirect | -98.00% | Disposed | |
| April 1, 2022 | ZETA | A | 1,960 | $12.75 | $24,990 | 1,960 Direct | · | Acquired | 166.5% (price as of ) |
| June 14, 2021 | ZETA | S | 456,341 | $10.00 | $4,563,410 | 10,015,184 Indirect | -4.36% | Disposed | 239.8% (price as of ) |
| June 14, 2021 | ZETA | S | 2,105 | $10.00 | $21,050 | 47,895 Indirect | -4.21% | Disposed | 239.8% (price as of ) |
| Nov. 16, 2009 | KW | J | 23,991 | $9.95 | $238,710 | 92,285 Indirect | +35.13% | Acquired | |
| Nov. 16, 2009 | KW | J | 9,258 | $9.92 | $91,839 | 101,543 Indirect | +10.03% | Acquired | |
| Nov. 16, 2009 | KW | D | 18,568 | $0.55 | $10,212 | 361,432 Indirect | -4.89% | Disposed | |
| Nov. 13, 2009 | KW | J | 22,037 | · | · | 354,341 Indirect | -5.86% | Disposed | |
| Nov. 13, 2009 | KW | D | 286,047 | · | · | 68,294 Indirect | -80.73% | Disposed | |
| Nov. 12, 2009 | KW | J | 40,000 | · | · | 380,000 Indirect | -9.52% | Disposed |
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 |
|---|---|---|---|---|---|---|---|
| Nov. 16, 2009 | KW | Sponsors' Warrants | Common Stock, par value $0.0001 per share | $12.50 | Nov. 13, 2013 | 18,568 | Disposed |
| Nov. 12, 2009 | KW | Sponsors' Warrants [F5] | Common Stock, par value $0.0001 per share | $12.50 | Nov. 13, 2013 | 40,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| June 9, 2021 | ZETA | Class A Common Stock | 10,471,559 | Indirect |
| June 9, 2021 | ZETA | Class A Common Stock | 50,000 | Indirect |
| June 9, 2021 | ZETA | Class A Common Stock | 405,156 | Indirect |
| June 9, 2021 | ZETA | Class A Common Stock | 607,165 | Indirect |
| Nov. 16, 2009 | KW | Common Stock, $0.0001 Par Value Per Share | 432,835 | Indirect |
Holdings reported on Form 4 95 reported holdings
Positions listed on each Form 4 without a transaction in that filing (Table I and II holdings), newest filing first.
| Date | Ticker | Security | Shares | Exercise price | Expiration | Ownership |
|---|---|---|---|---|---|---|
| Oct. 2, 2026 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Aug. 14, 2026 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| July 2, 2026 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| April 3, 2026 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Jan. 2, 2026 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Nov. 21, 2025 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Oct. 3, 2025 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| July 3, 2025 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| April 3, 2025 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| March 14, 2025 | ZETA | Class A Common Stock | 258,329 | · | · | Direct |
| March 14, 2025 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Jan. 3, 2025 | ZETA | Class A Common Stock | 33,330 | · | · | Indirect |
| Jan. 3, 2025 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Dec. 13, 2024 | ZETA | Class A Common Stock | 256,940 | · | · | Direct |
| Dec. 13, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Nov. 18, 2024 | ZETA | Class A Common Stock | 66,664 | · | · | Indirect |
| Nov. 18, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Oct. 3, 2024 | ZETA | Class A Common Stock | 66,664 | · | · | Indirect |
| Oct. 3, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| July 3, 2024 | ZETA | Class A Common Stock | 66,664 | · | · | Indirect |
| July 3, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| May 17, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| April 3, 2024 | ZETA | Class A Common Stock | 83,331 | · | · | Indirect |
| April 3, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| March 8, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Jan. 3, 2024 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Jan. 3, 2024 | ZETA | Class A Common Stock | 114,182 | · | · | Indirect |
| Dec. 15, 2023 | ZETA | Class A Common Stock | 481,041 | · | · | Direct |
| Dec. 15, 2023 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Nov. 27, 2023 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| Nov. 27, 2023 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| Nov. 27, 2023 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| Nov. 27, 2023 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| Nov. 27, 2023 | ZETA | Class A Common Stock | 200,000 | · | · | Indirect |
| Nov. 27, 2023 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| Nov. 27, 2023 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Oct. 2, 2023 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| Oct. 2, 2023 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| Oct. 2, 2023 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| Oct. 2, 2023 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| Oct. 2, 2023 | ZETA | Class A Common Stock | 200,000 | · | · | Indirect |
| Oct. 2, 2023 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| Oct. 2, 2023 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| July 5, 2023 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| July 5, 2023 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| July 5, 2023 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| July 5, 2023 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| July 5, 2023 | ZETA | Class A Common Stock | 200,000 | · | · | Indirect |
| July 5, 2023 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| July 5, 2023 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| April 4, 2023 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| April 4, 2023 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| April 4, 2023 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| April 4, 2023 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| April 4, 2023 | ZETA | Class A Common Stock | 200,000 | · | · | Indirect |
| April 4, 2023 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| April 4, 2023 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Jan. 4, 2023 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| Jan. 4, 2023 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| Jan. 4, 2023 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| Jan. 4, 2023 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| Jan. 4, 2023 | ZETA | Class A Common Stock | 200,000 | · | · | Indirect |
| Jan. 4, 2023 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| Jan. 4, 2023 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 502,188 | · | · | Direct |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 200,000 | · | · | Indirect |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| Nov. 18, 2022 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 1,303,533 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 200,000 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 405,156 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| Oct. 4, 2022 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 1,850 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 1,940 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 36,676 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 1,303,533 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 185 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 405,156 | · | · | Indirect |
| July 6, 2022 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| April 5, 2022 | ZETA | Class A Common Stock | 10,015,184 | · | · | Indirect |
| April 5, 2022 | ZETA | Class A Common Stock | 405,156 | · | · | Indirect |
| April 5, 2022 | ZETA | Class A Common Stock | 47,895 | · | · | Indirect |
| April 5, 2022 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
| June 15, 2021 | ZETA | Class A Common Stock | 405,156 | · | · | Indirect |
| June 15, 2021 | ZETA | Class A Common Stock | 607,165 | · | · | Indirect |
Annual statements (Form 5) Transactions and holdings reported once a year on SEC Form 5 — exempt or late-reported trades, gifts and small acquisitions.
Transactions
| Date | Ticker | Security | Code | Shares | Price | Value | Owned after | Exercise price | Expiration | A/D |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 19, 2007 | KW | Common Stock | D | 56,457 | · | · | 376,378 | · | · | · |
| Nov. 20, 2007 | KW | Sponsors' Warrants [F3] | P | 420,000 | $1.00 | $420,000 | 420,000 | · | · | · |