SC 13G/A | 2024-02-09 | DIMENSIONAL FUND ADVISORS LP | PAM TRANSPORTATION SERVICES INC | 1,351,428 | 6.1% | EDGAR |
SC 13D/A | 2023-08-03 | MOROUN MATTHEW T | PAM TRANSPORTATION SERVICES INC | 15,930,948 | 72.3% | EDGAR |
SC 13D/A | 2023-05-12 | MOROUN MATTHEW T | PAM TRANSPORTATION SERVICES INC | 15,930,948 | 72.3% | EDGAR |
SC 13G/A | 2023-02-13 | RENAISSANCE TECHNOLOGIES LLC | PAM TRANSPORTATION SERVICES INC | 1,094,208 | 4.9% | EDGAR |
SC 13G/A | 2023-02-10 | DIMENSIONAL FUND ADVISORS LP | PAM TRANSPORTATION SERVICES INC | 1,405,974 | 6.3% | EDGAR |
SC 13G/A | 2022-02-11 | RENAISSANCE TECHNOLOGIES LLC | PAM TRANSPORTATION SERVICES INC | 642,010 | 5.8% | EDGAR |
SC 13G/A | 2022-02-08 | DIMENSIONAL FUND ADVISORS LP | PAM TRANSPORTATION SERVICES INC | 729,958 | 6.5% | EDGAR |
SC 13G/A | 2021-02-16 | DIMENSIONAL FUND ADVISORS LP | PAM TRANSPORTATION SERVICES INC | 377,352 | 6.6% | EDGAR |
SC 13G/A | 2021-02-11 | RENAISSANCE TECHNOLOGIES LLC | PAM TRANSPORTATION SERVICES INC | 358,523 | 6.2% | EDGAR |
SC 13G/A | 2020-02-13 | RENAISSANCE TECHNOLOGIES LLC | PAM TRANSPORTATION SERVICES INC | 385,074 | 6.7% | EDGAR |
SC 13G/A | 2020-02-12 | DIMENSIONAL FUND ADVISORS LP | PAM TRANSPORTATION SERVICES INC | 384,418 | 6.7% | EDGAR |
SC 13D/A | 2019-07-26 | MOROUN MATTHEW T | PAM TRANSPORTATION SERVICES INC | 3,904,765 | 67.8% | EDGAR |
SC 13G/A | 2019-02-13 | RENAISSANCE TECHNOLOGIES LLC | PAM TRANSPORTATION SERVICES INC | 396,074 | 6.6% | EDGAR |
SC 13G/A | 2019-02-08 | DIMENSIONAL FUND ADVISORS LP | PAM TRANSPORTATION SERVICES INC | 389,326 | 6.5% | EDGAR |
SC 13D/A | 2018-07-05 | MOROUN MATTHEW T | PAM TRANSPORTATION SERVICES INC | 3,904,560 | 64.8% | EDGAR |
SC 13G/A | 2018-02-14 | RENAISSANCE TECHNOLOGIES LLC | PAM TRANSPORTATION SERVICES INC | 362,100 | 5.7% | EDGAR |
SC 13G/A | 2018-02-09 | DIMENSIONAL FUND ADVISORS LP | PAM TRANSPORTATION SERVICES INC | 370,180 | 5.9% | EDGAR |
SC 13D/A | 2017-12-06 | MOROUN MATTHEW T | PAM TRANSPORTATION SERVICES INC | 3,904,284 | 63.3% | EDGAR |
SC 13D/A | 2017-04-07 | MOROUN MATTHEW T | PAM TRANSPORTATION SERVICES INC | 3,904,284 | 60.9% | EDGAR |
SC 13G | 2017-02-14 | RENAISSANCE TECHNOLOGIES LLC | PAM TRANSPORTATION SERVICES INC | 363,900 | 5.7% | EDGAR |