CLARK STEPHEN H /NC/
CIK 1158394 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 11, 2005 · Latest: Aug. 11, 2005
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Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 3 non-open-market transactions below
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
3 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 20, 2005 | AMT | S 10b5-1 | 5,000 | $24.00 | $120,000 | 193,500 Direct | -2.52% | Disposed | 638.7% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 5,100 | $24.01 | $122,451 | 188,400 Direct | -2.64% | Disposed | 638.4% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,000 | $24.02 | $24,020 | 187,400 Direct | -0.53% | Disposed | 638.1% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 7,800 | $24.03 | $187,434 | 179,600 Direct | -4.16% | Disposed | 637.8% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 11,100 | $24.04 | $266,844 | 168,500 Direct | -6.18% | Disposed | 637.5% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 4,400 | $24.05 | $105,820 | 164,100 Direct | -2.61% | Disposed | 637.2% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 3,400 | $24.06 | $81,804 | 160,700 Direct | -2.07% | Disposed | 636.9% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 6,300 | $24.07 | $151,641 | 154,400 Direct | -3.92% | Disposed | 636.6% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 8,900 | $24.08 | $214,312 | 145,500 Direct | -5.76% | Disposed | 636.3% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 12,100 | $24.09 | $291,489 | 133,400 Direct | -8.32% | Disposed | 635.9% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 26,800 | $24.10 | $645,880 | 106,600 Direct | -20.09% | Disposed | 635.6% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 3,800 | $24.11 | $91,618 | 102,800 Direct | -3.56% | Disposed | 635.3% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 2,300 | $24.12 | $55,476 | 100,500 Direct | -2.24% | Disposed | 635.0% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 2,300 | $24.13 | $55,499 | 98,200 Direct | -2.29% | Disposed | 634.7% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 600 | $24.14 | $14,484 | 97,600 Direct | -0.61% | Disposed | 634.4% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,300 | $24.15 | $31,395 | 96,300 Direct | -1.33% | Disposed | 634.1% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 600 | $24.16 | $14,496 | 95,700 Direct | -0.62% | Disposed | 633.8% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 2,800 | $24.17 | $67,676 | 92,900 Direct | -2.93% | Disposed | 633.5% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 4,100 | $24.18 | $99,138 | 88,800 Direct | -4.41% | Disposed | 633.2% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,900 | $24.19 | $45,961 | 86,900 Direct | -2.14% | Disposed | 632.9% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 600 | $24.20 | $14,520 | 86,300 Direct | -0.69% | Disposed | 632.6% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 3,000 | $24.21 | $72,630 | 83,300 Direct | -3.48% | Disposed | 632.3% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 400 | $24.27 | $9,708 | 82,900 Direct | -0.48% | Disposed | 630.5% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 100 | $24.28 | $2,428 | 82,800 Direct | -0.12% | Disposed | 630.2% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,400 | $24.29 | $34,006 | 81,400 Direct | -1.69% | Disposed | 629.9% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 300 | $24.30 | $7,290 | 81,100 Direct | -0.37% | Disposed | 629.6% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 600 | $24.31 | $14,586 | 80,500 Direct | -0.74% | Disposed | 629.3% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,300 | $24.32 | $31,616 | 79,200 Direct | -1.61% | Disposed | 629.0% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 300 | $24.33 | $7,299 | 78,900 Direct | -0.38% | Disposed | 628.7% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 2,100 | $24.40 | $51,240 | 76,800 Direct | -2.66% | Disposed | 626.6% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,800 | $24.41 | $43,938 | 75,000 Direct | -2.34% | Disposed | 626.3% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 200 | $24.45 | $4,890 | 74,800 Direct | -0.27% | Disposed | 625.1% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 3,200 | $24.46 | $78,272 | 71,600 Direct | -4.28% | Disposed | 624.8% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 900 | $24.47 | $22,023 | 70,700 Direct | -1.26% | Disposed | 624.5% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,300 | $24.48 | $31,824 | 69,400 Direct | -1.84% | Disposed | 624.2% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 1,200 | $24.49 | $29,388 | 68,200 Direct | -1.73% | Disposed | 623.9% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 2,000 | $24.50 | $49,000 | 66,200 Direct | -2.93% | Disposed | 623.6% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 600 | $24.53 | $14,718 | 65,600 Direct | -0.91% | Disposed | 622.7% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 4,000 | $24.54 | $98,160 | 61,600 Direct | -6.10% | Disposed | 622.5% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 15,000 | $24.55 | $368,250 | 46,600 Direct | -24.35% | Disposed | 622.2% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 2,400 | $24.56 | $58,944 | 44,200 Direct | -5.15% | Disposed | 621.9% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 900 | $24.58 | $22,122 | 43,300 Direct | -2.04% | Disposed | 621.3% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 3,900 | $24.59 | $95,901 | 39,400 Direct | -9.01% | Disposed | 621.0% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 21,700 | $24.60 | $533,820 | 17,700 Direct | -55.08% | Disposed | 620.7% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 2,000 | $24.63 | $49,260 | 15,700 Direct | -11.30% | Disposed | 619.8% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 500 | $24.68 | $12,340 | 15,200 Direct | -3.18% | Disposed | 618.4% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 7,500 | $24.75 | $185,625 | 7,700 Direct | -49.34% | Disposed | 616.3% (price as of 2026-08-20) |
| Sept. 20, 2005 | AMT | S 10b5-1 | 7,700 | $24.89 | $191,653 | 0 Direct | -100.00% | Disposed | 612.3% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 600 | $24.60 | $14,760 | 401,587 Direct | -0.15% | Disposed | 620.7% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 2,500 | $24.61 | $61,525 | 399,087 Direct | -0.62% | Disposed | 620.4% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 29,600 | $24.62 | $728,752 | 369,487 Direct | -7.42% | Disposed | 620.1% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 10,000 | $24.63 | $246,300 | 359,487 Direct | -2.71% | Disposed | 619.8% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 5,500 | $24.64 | $135,520 | 354,487 Direct | -1.53% | Disposed | 619.5% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 4,200 | $24.65 | $103,530 | 350,287 Direct | -1.18% | Disposed | 619.2% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 6,800 | $24.66 | $167,688 | 343,487 Direct | -1.94% | Disposed | 618.9% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 3,600 | $24.67 | $88,812 | 339,887 Direct | -1.05% | Disposed | 618.6% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 800 | $24.68 | $19,744 | 339,087 Direct | -0.24% | Disposed | 618.4% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 800 | $24.69 | $19,752 | 338,287 Direct | -0.24% | Disposed | 618.1% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 5,500 | $24.70 | $135,850 | 332,787 Direct | -1.63% | Disposed | 617.8% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 600 | $24.71 | $14,826 | 332,187 Direct | -0.18% | Disposed | 617.5% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 100 | $24.73 | $2,473 | 332,087 Direct | -0.03% | Disposed | 616.9% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 6,100 | $24.74 | $150,914 | 325,987 Direct | -1.84% | Disposed | 616.6% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 1,600 | $24.75 | $39,600 | 324,387 Direct | -0.49% | Disposed | 616.3% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 1,100 | $24.76 | $27,236 | 323,287 Direct | -0.34% | Disposed | 616.0% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 300 | $24.77 | $7,431 | 322,987 Direct | -0.09% | Disposed | 615.7% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 1,100 | $24.78 | $27,258 | 321,887 Direct | -0.34% | Disposed | 615.5% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 400 | $24.79 | $9,916 | 321,487 Direct | -0.12% | Disposed | 615.2% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 7,400 | $24.80 | $183,520 | 314,087 Direct | -2.30% | Disposed | 614.9% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 1,400 | $24.81 | $34,734 | 312,687 Direct | -0.45% | Disposed | 614.6% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 500 | $24.82 | $12,410 | 312,187 Direct | -0.16% | Disposed | 614.3% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 700 | $24.83 | $17,381 | 311,487 Direct | -0.22% | Disposed | 614.0% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 3,600 | $24.84 | $89,424 | 307,887 Direct | -1.16% | Disposed | 613.7% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 3,700 | $24.85 | $91,945 | 304,187 Direct | -1.20% | Disposed | 613.4% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 1,100 | $24.87 | $27,357 | 303,087 Direct | -0.36% | Disposed | 612.9% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 2,900 | $24.89 | $72,181 | 300,187 Direct | -0.96% | Disposed | 612.3% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 12,187 | $24.94 | $303,944 | 288,000 Direct | -4.06% | Disposed | 610.9% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 4,900 | $24.95 | $122,255 | 283,100 Direct | -1.70% | Disposed | 610.6% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 100 | $24.96 | $2,496 | 283,000 Direct | -0.04% | Disposed | 610.3% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 35,000 | $25.00 | $875,000 | 248,000 Direct | -12.37% | Disposed | 609.2% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 16,300 | $25.01 | $407,663 | 231,700 Direct | -6.57% | Disposed | 608.9% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 23,000 | $25.02 | $575,460 | 208,700 Direct | -9.93% | Disposed | 608.6% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 200 | $25.03 | $5,006 | 208,500 Direct | -0.10% | Disposed | 608.3% (price as of 2026-08-20) |
| Sept. 19, 2005 | AMT | S 10b5-1 | 10,000 | $25.04 | $250,400 | 198,500 Direct | -4.80% | Disposed | 608.0% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 19,900 | $24.46 | $486,754 | 382,287 Direct | -4.95% | Disposed | 624.8% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 36,187 | $24.50 | $886,582 | 346,100 Direct | -9.47% | Disposed | 623.6% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 1,600 | $24.51 | $39,216 | 344,500 Direct | -0.46% | Disposed | 623.3% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 1,500 | $24.52 | $36,780 | 343,000 Direct | -0.44% | Disposed | 623.0% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 800 | $24.53 | $19,624 | 342,200 Direct | -0.23% | Disposed | 622.7% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 13,600 | $24.54 | $333,744 | 328,600 Direct | -3.97% | Disposed | 622.5% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 24,800 | $24.55 | $608,840 | 303,800 Direct | -7.55% | Disposed | 622.2% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 9,700 | $24.56 | $238,232 | 294,100 Direct | -3.19% | Disposed | 621.9% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 23,000 | $24.57 | $565,110 | 271,100 Direct | -7.82% | Disposed | 621.6% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 9,000 | $24.58 | $221,220 | 262,100 Direct | -3.32% | Disposed | 621.3% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 8,300 | $24.59 | $204,097 | 253,800 Direct | -3.17% | Disposed | 621.0% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 41,300 | $24.60 | $1,015,980 | 212,500 Direct | -16.27% | Disposed | 620.7% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 1,400 | $24.61 | $34,454 | 211,100 Direct | -0.66% | Disposed | 620.4% (price as of 2026-08-20) |
| Sept. 12, 2005 | AMT | S 10b5-1 | 8,000 | $24.62 | $196,960 | 203,100 Direct | -3.79% | Disposed | 620.1% (price as of 2026-08-20) |
Showing latest 100 of 164 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 |
|---|---|---|---|---|---|---|---|
| Sept. 19, 2005 | AMT | Option to Purchase Class A Common Stock [F2] | Class A Common Stock (402,187) | $4.18 | March 12, 2013 | 402,187 | Disposed |
| Sept. 12, 2005 | AMT | Option to Purchase Class A Common Stock [F2] | Class A Common Stock (402,187) | $4.18 | March 12, 2013 | 402,187 | Disposed |
| Sept. 6, 2005 | AMT | Option to purchase Class A Common Stock [F2] | Class A Common Stock (402,187) | $4.18 | March 13, 2013 | 402,187 | Disposed |
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 |
|---|---|---|---|---|
| Aug. 11, 2005 | AMT | Option to Purchase Class A Common Stock [F1]→ Class A Common Stock (2,491,070) | 2,491,070 | Direct |