Kenneth L Londoner
CIK 1449534 · View on SEC EDGAR ↗
Insider
First SEC filing: July 20, 2015 · Latest: July 20, 2015
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 1 non-open-market transaction 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
1 other filing hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 13, 2023 | STEX | P | 600 | $1.23 | $738 | 2,507,020 Direct | +0.02% | Acquired | -93.5% (price as of 2026-08-21) |
| June 13, 2023 | STEX | P | 2,000 | $1.22 | $2,440 | 2,506,420 Direct | +0.08% | Acquired | -93.4% (price as of 2026-08-21) |
| June 13, 2023 | STEX | P | 3,000 | $1.26 | $3,780 | 2,504,420 Direct | +0.12% | Acquired | -93.6% (price as of 2026-08-21) |
| June 13, 2023 | STEX | P | 10,000 | $1.24 | $12,400 | 2,501,420 Direct | +0.40% | Acquired | -93.5% (price as of 2026-08-21) |
| June 12, 2023 | STEX | P | 2,000 | $1.20 | $2,400 | 2,491,420 Direct | +0.08% | Acquired | -93.3% (price as of 2026-08-21) |
| June 12, 2023 | STEX | P | 2,000 | $1.22 | $2,440 | 2,489,420 Direct | +0.08% | Acquired | -93.4% (price as of 2026-08-21) |
| June 12, 2023 | STEX | P | 2,000 | $1.10 | $2,200 | 2,487,420 Direct | +0.08% | Acquired | -92.7% (price as of 2026-08-21) |
| June 2, 2023 | STEX | P | 400 | $1.44 | $576 | 2,485,420 Direct | +0.02% | Acquired | -94.4% (price as of 2026-08-21) |
| June 2, 2023 | STEX | P | 200 | $1.43 | $286 | 2,485,020 Direct | +0.01% | Acquired | -94.4% (price as of 2026-08-21) |
| June 2, 2023 | STEX | P | 3,000 | $1.37 | $4,110 | 2,484,820 Direct | +0.12% | Acquired | -94.2% (price as of 2026-08-21) |
| June 2, 2023 | STEX | P | 1,000 | $1.32 | $1,320 | 2,481,820 Direct | +0.04% | Acquired | -93.9% (price as of 2026-08-21) |
| May 31, 2023 | STEX | P | 1,000 | $1.60 | $1,600 | 2,480,820 Direct | +0.04% | Acquired | -95.0% (price as of 2026-08-21) |
| May 31, 2023 | STEX | P | 1,000 | $1.59 | $1,590 | 2,479,820 Direct | +0.04% | Acquired | -95.0% (price as of 2026-08-21) |
| May 31, 2023 | STEX | P | 1,000 | $1.58 | $1,580 | 2,478,820 Direct | +0.04% | Acquired | -94.9% (price as of 2026-08-21) |
| May 31, 2023 | STEX | P | 1,000 | $1.57 | $1,570 | 2,477,820 Direct | +0.04% | Acquired | -94.9% (price as of 2026-08-21) |
| May 31, 2023 | STEX | P | 1,000 | $1.56 | $1,560 | 2,476,820 Direct | +0.04% | Acquired | -94.9% (price as of 2026-08-21) |
| May 31, 2023 | STEX | P | 2,000 | $1.55 | $3,100 | 2,475,820 Direct | +0.08% | Acquired | -94.8% (price as of 2026-08-21) |
| May 31, 2023 | STEX | P | 1,000 | $1.56 | $1,560 | 2,473,820 Direct | +0.04% | Acquired | -94.9% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 3,000 | $0.82 | $2,460 | 1,896,820 Direct | +0.16% | Acquired | -90.2% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 1,000 | $0.83 | $830 | 1,893,820 Direct | +0.05% | Acquired | -90.4% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 2,000 | $0.94 | $1,880 | 1,892,820 Direct | +0.11% | Acquired | -91.5% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 200 | $0.78 | $156 | 1,890,820 Direct | +0.01% | Acquired | -89.7% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 2,500 | $0.79 | $1,975 | 1,890,620 Direct | +0.13% | Acquired | -89.9% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 5,400 | $0.84 | $4,536 | 1,888,120 Direct | +0.29% | Acquired | -90.5% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 500 | $0.85 | $425 | 1,882,720 Direct | +0.03% | Acquired | -90.6% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 3,000 | $0.80 | $2,400 | 1,882,220 Direct | +0.16% | Acquired | -90.0% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 5,200 | $0.81 | $4,212 | 1,879,220 Direct | +0.28% | Acquired | -90.1% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 1,900 | $0.82 | $1,558 | 1,874,020 Direct | +0.10% | Acquired | -90.2% (price as of 2026-08-21) |
| Sept. 9, 2022 | STEX | P | 5,000 | $0.77 | $3,850 | 1,872,120 Direct | +0.27% | Acquired | -89.6% (price as of 2026-08-21) |
| Sept. 8, 2022 | STEX | P | 1,000 | $0.87 | $870 | 1,867,120 Direct | +0.05% | Acquired | -90.8% (price as of 2026-08-21) |
| Sept. 8, 2022 | STEX | P | 2,000 | $0.85 | $1,700 | 1,866,120 Direct | +0.11% | Acquired | -90.6% (price as of 2026-08-21) |
| Sept. 8, 2022 | STEX | P | 500 | $0.88 | $440 | 1,864,120 Direct | +0.03% | Acquired | -90.9% (price as of 2026-08-21) |
| Sept. 8, 2022 | STEX | P | 500 | $0.85 | $425 | 1,863,620 Direct | +0.03% | Acquired | -90.6% (price as of 2026-08-21) |
| Sept. 8, 2022 | STEX | P | 11,760 | $0.83 | $9,761 | 1,863,120 Direct | +0.64% | Acquired | -90.4% (price as of 2026-08-21) |
| Sept. 8, 2022 | STEX | P | 7,006 | $0.84 | $5,885 | 1,851,360 Direct | +0.38% | Acquired | -90.5% (price as of 2026-08-21) |
| Sept. 7, 2022 | STEX | P | 1,000 | $0.83 | $830 | 1,844,354 Direct | +0.05% | Acquired | -90.4% (price as of 2026-08-21) |
| Sept. 7, 2022 | STEX | P | 3,250 | $0.82 | $2,665 | 1,843,354 Direct | +0.18% | Acquired | -90.2% (price as of 2026-08-21) |
| Sept. 7, 2022 | STEX | P | 2,000 | $0.84 | $1,680 | 1,840,104 Direct | +0.11% | Acquired | -90.5% (price as of 2026-08-21) |
| Sept. 7, 2022 | STEX | P | 500 | $0.96 | $480 | 1,838,104 Direct | +0.03% | Acquired | -91.7% (price as of 2026-08-21) |
| Sept. 7, 2022 | STEX | P | 500 | $1.10 | $550 | 1,837,604 Direct | +0.03% | Acquired | -92.7% (price as of 2026-08-21) |
| Sept. 6, 2022 | STEX | P | 1,000 | $1.01 | $1,010 | 1,837,806 Direct | +0.05% | Acquired | -92.1% (price as of 2026-08-21) |
| Sept. 6, 2022 | STEX | P | 1,000 | $1.00 | $1,000 | 1,836,104 Direct | +0.05% | Acquired | -92.0% (price as of 2026-08-21) |
| Sept. 6, 2022 | STEX | P | 2,400 | $1.02 | $2,448 | 1,835,104 Direct | +0.13% | Acquired | -92.2% (price as of 2026-08-21) |
| Sept. 6, 2022 | STEX | P | 500 | $1.03 | $515 | 1,832,704 Direct | +0.03% | Acquired | -92.2% (price as of 2026-08-21) |
| Sept. 6, 2022 | STEX | P | 1,000 | $1.03 | $1,030 | 1,832,204 Direct | +0.05% | Acquired | -92.2% (price as of 2026-08-21) |
| Sept. 2, 2022 | STEX | P | 500 | $1.08 | $540 | 1,831,204 Direct | +0.03% | Acquired | -92.6% (price as of 2026-08-21) |
| Sept. 2, 2022 | STEX | P | 400 | $1.06 | $424 | 1,830,704 Direct | +0.02% | Acquired | -92.4% (price as of 2026-08-21) |
| Sept. 2, 2022 | STEX | P | 2,500 | $1.07 | $2,675 | 1,830,304 Direct | +0.14% | Acquired | -92.5% (price as of 2026-08-21) |
| Sept. 2, 2022 | STEX | P | 3,000 | $1.09 | $3,270 | 1,827,804 Direct | +0.16% | Acquired | -92.7% (price as of 2026-08-21) |
| Sept. 1, 2022 | STEX | P | 17,240 | $1.08 | $18,619 | 1,824,804 Direct | +0.95% | Acquired | -92.6% (price as of 2026-08-21) |
| Aug. 30, 2022 | STEX | P | 2,000 | $1.06 | $2,120 | 1,807,564 Direct | +0.11% | Acquired | -92.4% (price as of 2026-08-21) |
| Aug. 30, 2022 | STEX | P | 2,000 | $1.09 | $2,180 | 1,805,564 Direct | +0.11% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 30, 2022 | STEX | P | 1,000 | $1.16 | $1,160 | 1,803,564 Direct | +0.06% | Acquired | -93.1% (price as of 2026-08-21) |
| Aug. 30, 2022 | STEX | P | 4,000 | $1.07 | $4,280 | 1,802,564 Direct | +0.22% | Acquired | -92.5% (price as of 2026-08-21) |
| Aug. 29, 2022 | STEX | P | 1,000 | $1.01 | $1,010 | 1,798,564 Direct | +0.06% | Acquired | -92.1% (price as of 2026-08-21) |
| Aug. 29, 2022 | STEX | P | 6,100 | $1.10 | $6,710 | 1,797,564 Direct | +0.34% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 29, 2022 | STEX | P | 250 | $1.10 | $275 | 1,791,464 Direct | +0.01% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 29, 2022 | STEX | P | 250 | $1.09 | $272 | 1,791,214 Direct | +0.01% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 29, 2022 | STEX | P | 250 | $1.09 | $272 | 1,790,964 Direct | +0.01% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 29, 2022 | STEX | P | 1,000 | $1.08 | $1,080 | 1,790,714 Direct | +0.06% | Acquired | -92.6% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 1,000 | $1.07 | $1,070 | 1,789,714 Direct | +0.06% | Acquired | -92.5% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 1,000 | $1.08 | $1,080 | 1,788,714 Direct | +0.06% | Acquired | -92.6% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 100 | $1.09 | $109 | 1,787,714 Direct | +0.01% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 1,000 | $1.12 | $1,120 | 1,787,614 Direct | +0.06% | Acquired | -92.9% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 1,000 | $1.17 | $1,170 | 1,786,614 Direct | +0.06% | Acquired | -93.2% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 1,000 | $1.18 | $1,180 | 1,785,614 Direct | +0.06% | Acquired | -93.2% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 176 | $1.15 | $202 | 1,784,614 Direct | +0.01% | Acquired | -93.0% (price as of 2026-08-21) |
| Aug. 26, 2022 | STEX | P | 3,000 | $1.15 | $3,450 | 1,784,438 Direct | +0.17% | Acquired | -93.0% (price as of 2026-08-21) |
| Aug. 25, 2022 | STEX | P | 200 | $1.15 | $230 | 1,781,438 Direct | +0.01% | Acquired | -93.0% (price as of 2026-08-21) |
| Aug. 25, 2022 | STEX | P | 200 | $1.16 | $232 | 1,781,238 Direct | +0.01% | Acquired | -93.1% (price as of 2026-08-21) |
| Aug. 25, 2022 | STEX | P | 200 | $1.17 | $234 | 1,781,038 Direct | +0.01% | Acquired | -93.2% (price as of 2026-08-21) |
| Aug. 25, 2022 | STEX | P | 450 | $1.18 | $531 | 1,780,838 Direct | +0.03% | Acquired | -93.2% (price as of 2026-08-21) |
| Aug. 25, 2022 | STEX | P | 7,400 | $1.19 | $8,806 | 1,780,388 Direct | +0.42% | Acquired | -93.3% (price as of 2026-08-21) |
| Aug. 23, 2022 | STEX | P | 1,000 | $1.10 | $1,100 | 1,772,988 Direct | +0.06% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 23, 2022 | STEX | P | 2,000 | $1.10 | $2,200 | 1,771,988 Direct | +0.11% | Acquired | -92.7% (price as of 2026-08-21) |
| Aug. 23, 2022 | STEX | P | 2,000 | $1.15 | $2,300 | 1,769,988 Direct | +0.11% | Acquired | -93.0% (price as of 2026-08-21) |
| Aug. 23, 2022 | STEX | P | 1,000 | $1.15 | $1,150 | 1,767,988 Direct | +0.06% | Acquired | -93.0% (price as of 2026-08-21) |
| Aug. 23, 2022 | STEX | P | 1,000 | $1.04 | $1,040 | 1,766,988 Direct | +0.06% | Acquired | -92.3% (price as of 2026-08-21) |
| Aug. 23, 2022 | STEX | P | 5,000 | $1.05 | $5,250 | 1,765,988 Direct | +0.28% | Acquired | -92.4% (price as of 2026-08-21) |
| Aug. 19, 2022 | STEX | P | 4,000 | $1.00 | $4,000 | 1,760,988 Direct | +0.23% | Acquired | -92.0% (price as of 2026-08-21) |
| Aug. 19, 2022 | STEX | P | 3,000 | $1.00 | $3,000 | 1,756,988 Direct | +0.17% | Acquired | -92.0% (price as of 2026-08-21) |
| Aug. 19, 2022 | STEX | P | 3,000 | $1.01 | $3,030 | 1,753,988 Direct | +0.17% | Acquired | -92.1% (price as of 2026-08-21) |
| Aug. 17, 2022 | STEX | P | 6,000 | $0.99 | $5,940 | 1,750,988 Direct | +0.34% | Acquired | -91.9% (price as of 2026-08-21) |
| Aug. 17, 2022 | STEX | P | 1,300 | $0.98 | $1,274 | 1,744,988 Direct | +0.07% | Acquired | -91.8% (price as of 2026-08-21) |
| Aug. 17, 2022 | STEX | P | 600 | $0.86 | $516 | 1,743,688 Direct | +0.03% | Acquired | -90.7% (price as of 2026-08-21) |
| Aug. 17, 2022 | STEX | P | 4,000 | $0.97 | $3,880 | 1,743,088 Direct | +0.23% | Acquired | -91.7% (price as of 2026-08-21) |
| Aug. 17, 2022 | STEX | P | 400 | $0.84 | $336 | 1,739,088 Direct | +0.02% | Acquired | -90.5% (price as of 2026-08-21) |
| Aug. 17, 2022 | STEX | P | 300 | $0.91 | $273 | 1,738,688 Direct | +0.02% | Acquired | -91.2% (price as of 2026-08-21) |
| Aug. 17, 2022 | STEX | P | 500 | $0.88 | $440 | 1,738,388 Direct | +0.03% | Acquired | -90.9% (price as of 2026-08-21) |
| Aug. 16, 2022 | STEX | P | 4,100 | $0.96 | $3,936 | 1,737,888 Direct | +0.24% | Acquired | -91.7% (price as of 2026-08-21) |
| Aug. 16, 2022 | STEX | P | 5,000 | $0.90 | $4,500 | 1,733,788 Direct | +0.29% | Acquired | -91.1% (price as of 2026-08-21) |
| Aug. 16, 2022 | STEX | P | 4,000 | $0.87 | $3,480 | 1,728,788 Direct | +0.23% | Acquired | -90.8% (price as of 2026-08-21) |
| Aug. 16, 2022 | STEX | P | 1,000 | $0.80 | $800 | 1,724,788 Direct | +0.06% | Acquired | -90.0% (price as of 2026-08-21) |
| Aug. 16, 2022 | STEX | P | 5,000 | $0.88 | $4,400 | 1,723,788 Direct | +0.29% | Acquired | -90.9% (price as of 2026-08-21) |
| Aug. 16, 2022 | STEX | P | 3,000 | $0.91 | $2,730 | 1,718,788 Direct | +0.17% | Acquired | -91.2% (price as of 2026-08-21) |
| Aug. 16, 2022 | STEX | P | 3,000 | $0.92 | $2,760 | 1,715,788 Direct | +0.18% | Acquired | -91.3% (price as of 2026-08-21) |
| May 25, 2022 | STEX | P | 9,300 | $1.15 | $10,695 | 1,712,788 Direct | +0.55% | Acquired | -93.0% (price as of 2026-08-21) |
| May 24, 2022 | STEX | P | 8,744 | $1.10 | $9,618 | 1,703,488 Direct | +0.52% | Acquired | -92.7% (price as of 2026-08-21) |
| May 23, 2022 | STEX | P | 11,850 | $1.14 | $13,509 | 1,694,744 Direct | +0.70% | Acquired | -93.0% (price as of 2026-08-21) |
Showing latest 100 of 412 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 |
|---|---|---|---|---|---|---|---|
| March 30, 2022 | STEX | Restricted Stock | Common Stock (400,000) | — | — | 400,000 | Acquired |
| Dec. 28, 2021 | STEX | Stock Option (Right to Buy) | Common Stock (75,000) | $2.44 | Dec. 28, 2031 | 75,000 | Acquired |
| April 14, 2020 | STEX | Stock Option (Right to Buy) | Common Stock (100,000) | $4.66 | April 14, 2030 | 100,000 | Acquired |
| Jan. 16, 2020 | STEX | Stock Option (Right to Buy) | Common Stock (100,000) | $5.23 | Jan. 16, 2020 | 100,000 | Acquired |
| Oct. 23, 2015 | STEX | Warrants to Purchase Common Stock | Common Stock (33,334) | $1.95 | Oct. 23, 2018 | 33,334 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 7 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 20, 2015 | STEX | Common Stock, $0.001 par value per share | 519,550 | Direct |
| July 20, 2015 | STEX | Common Stock, $0.001 par value per share | 3,334,974 | Indirect |
| July 20, 2015 | STEX | Options to Purchase Common Stock→ Common Stock (250,000) | 250,000 | Direct |
| July 20, 2015 | STEX | Warrants to Purchase Common Stock→ Common Stock (166,508) | 166,508 | Direct |
| July 20, 2015 | STEX | Warrants to Purchase Common Stock→ Common Stock (41,628) | 41,628 | Direct |
| July 20, 2015 | STEX | Warrants to Purchase Common Stock→ Common Stock (41,628) | 41,628 | Direct |
| July 20, 2015 | STEX | Warrants to Purchase Common Stock→ Common Stock (46,531) | 46,531 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
STEX
CEO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2022 | $865,667 | $125,000 | $504,000 | — | — | — | $177,030 | $1,671,697 |
| 2021 | $840,000 | $105,000 | $1,197,000 | $119,633 | — | — | $93,381 | $2,355,014 |
| 2020 | $741,667 | $395,000 | $1,600,000 | $356,388 | — | — | $62,000 | $3,155,055 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.