Only open-market buys / sells (codes P/S) are a conviction signal; grants, option exercises, tax-withholding, and gifts are compensation mechanics, shown but greyed. The trailing 12-month tallies run to today but the store covers filings through 2026-06-30 only (SEC bulk data sets publish quarterly), so recent activity may be absent.
| Date | Insider | Role | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2022-11-28 | Nagao Hideki | Director | −Sell | 6,754 | $2.25 | $15,197 |
| 2022-11-22 | Nagao Hideki | Director | −Sell | 218 | $2.13 | $464 |
| 2022-11-21 | Nagao Hideki | Director | −Sell | 5,365 | $2.18 | $11,696 |
| 2022-11-17 | Nagao Hideki | Director | −Sell | 309 | $2.18 | $674 |
| 2021-08-23 | Matsuda Kazuko | Director,Officer | +Exercise | 60,000 | $2.30 | $138,000 |
| 2021-07-09 | IWAKI YUICHI | Director,Officer | +Exercise | 39,583 | $2.54 | $100,541 |
| 2021-06-24 | Matsuda Kazuko | Director,Officer | +Exercise | 46,554 | $2.54 | $118,247 |
| 2021-06-24 | Matsuda Kazuko | Director,Officer | +Exercise | 56,250 | $2.46 | $138,375 |
| 2021-05-19 | OBrien Geoffrey | Officer | +Exercise | 11,318 | $2.46 | $27,842 |
| 2021-05-19 | OBrien Geoffrey | Officer | +Exercise | 32,000 | $2.54 | $81,280 |
| 2021-03-11 | Nagao Hideki | Director | −Sell | 2,354 | $7.40 | $17,420 |
| 2021-02-25 | IWAKI YUICHI | Director,Officer | +Exercise | 86,250 | $2.46 | $212,175 |
| 2020-09-15 | Nagao Hideki | Director | −Sell | 1,000 | $5.78 | $5,780 |
| 2020-08-06 | Nagao Hideki | Director | +Exercise | 15,000 | $2.58 | $38,700 |
| 2020-06-12 | Matsuda Kazuko | Director,Officer | +Exercise | 20,000 | $5.13 | $102,600 |
| 2020-04-08 | IWAKI YUICHI | Director,Officer | +Exercise | 60,417 | $2.54 | $153,459 |
| 2020-04-08 | Matsuda Kazuko | Director,Officer | +Exercise | 28,446 | $2.54 | $72,253 |
| 2020-03-13 | Matsuda Kazuko | Director,Officer | +Buy | 2,000 | $3.62 | $7,240 |
| 2020-03-13 | Matsuda Kazuko | Director,Officer | +Buy | 2,000 | $3.62 | $7,240 |
| 2020-03-12 | IWAKI YUICHI | Director,Officer | +Buy | 20,000 | $3.10 | $62,000 |
| 2019-06-12 | Matsuda Kazuko | Officer | +Exercise | 37,000 | $4.80 | $177,600 |
| 2019-05-13 | Nagao Hideki | Director | +Exercise | 1,000 | $2.77 | $2,770 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 42,500 | $4.10 | $174,250 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 80,000 | $4.10 | $328,000 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 105,000 | $2.64 | $277,200 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 120,000 | $3.91 | $469,200 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 30,000 | $3.91 | $117,300 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 15,000 | $3.24 | $48,600 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 100,000 | $6.10 | $610,000 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 105,000 | $7.00 | $735,000 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 35,700 | $7.34 | $262,038 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 85,000 | $2.54 | $215,900 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 63,750 | $2.46 | $156,825 |
| 2019-02-28 | Okajima Masatsune | Officer | +Exercise | 105,000 | $3.09 | $324,450 |
| 2019-01-09 | Okajima Masatsune | Officer | +Exercise | 41,250 | $2.20 | $90,750 |
| 2019-01-03 | IWAKI YUICHI | Director,Officer | +Exercise | 18,572 | $2.20 | $40,858 |
| 2018-03-05 | IWAKI YUICHI | Director,Officer | +Exercise | 50,003 | $2.20 | $110,007 |
| 2018-01-03 | IWAKI YUICHI | Director,Officer | +Exercise | 53,363 | $4.42 | $235,864 |
| 2017-12-12 | Okajima Masatsune | Officer | +Exercise | 48,000 | $4.42 | $212,160 |
| 2017-11-02 | IWAKI YUICHI | Director,Officer | +Exercise | 21,067 | $4.42 | $93,116 |
| 2017-08-21 | Ishizaka Yoshio | Director | +Buy | 5,000 | $5.17 | $25,850 |
| 2017-05-15 | Kobayashi Yutaka | Director | +Buy | 1,000 | $5.60 | $5,600 |
| 2017-05-12 | Kobayashi Yutaka | Director | +Buy | 24,000 | $5.62 | $134,880 |
| 2016-09-15 | Kobayashi Yutaka | Director | +Buy | 11,800 | $6.44 | $75,992 |
| 2016-09-09 | Kobayashi Yutaka | Director | +Buy | 10,000 | $6.67 | $66,700 |
| 2016-07-05 | OBrien Geoffrey | Officer | +Exercise | 3,300 | $4.80 | $15,840 |
| 2016-07-05 | OBrien Geoffrey | Officer | −Sell | 3,300 | $8.00 | $26,400 |
| 2016-03-14 | Okajima Masatsune | Officer | +Exercise | 8,400 | $3.56 | $29,904 |
| 2016-03-14 | Matsuda Kazuko | Officer | +Exercise | 800 | $3.56 | $2,848 |
Source: the SEC bulk insider (Form 3/4/5) data sets — non-derivative transactions in the issuer's common stock, most recent first, covering filings through 2026-06-30. Insiders file within 2 business days of a transaction, but the bulk sets publish quarterly, so this store lags live filings; option/derivative lines are excluded. Codes: P buy · S sell · A grant · M/X/C exercise · F tax · G gift.
Model-derived estimate for research. See the Disclaimer.
