| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2019-11-08 | BROWN CAPITAL MANAGEMENT LLC | Medidata Solutions, Inc. | - | 0.0% | EDGAR |
| SC 13G/A | 2019-02-14 | BROWN CAPITAL MANAGEMENT LLC | Medidata Solutions, Inc. | 4,102,664 | 6.7% | EDGAR |
| SC 13G/A | 2019-02-11 | VANGUARD GROUP INC | Medidata Solutions, Inc. | 5,444,428 | 8.9% | EDGAR |
| SC 13G/A | 2019-01-31 | BlackRock Inc. | Medidata Solutions, Inc. | 6,995,601 | 11.4% | EDGAR |
| SC 13G/A | 2019-01-10 | SANDS CAPITAL MANAGEMENT, LLC | Medidata Solutions, Inc. | - | 0.0% | EDGAR |
| SC 13G/A | 2018-02-14 | SANDS CAPITAL MANAGEMENT, LLC | Medidata Solutions, Inc. | 3,554,159 | 6.1% | EDGAR |
| SC 13G/A | 2018-02-14 | BROWN CAPITAL MANAGEMENT LLC | Medidata Solutions, Inc. | 5,339,762 | 9.1% | EDGAR |
| SC 13G/A | 2018-02-13 | FMR LLC | Medidata Solutions, Inc. | 2,750,076 | 4.7% | EDGAR |
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | Medidata Solutions, Inc. | 4,765,646 | 8.2% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | Medidata Solutions, Inc. | 6,634,957 | 11.3% | EDGAR |
| SC 13G/A | 2017-06-12 | FMR LLC | Medidata Solutions, Inc. | 3,997,399 | 6.8% | EDGAR |
| SC 13G/A | 2017-02-14 | FMR LLC | Medidata Solutions, Inc. | 7,576,968 | 13.1% | EDGAR |
| SC 13G/A | 2017-02-14 | SANDS CAPITAL MANAGEMENT, LLC | Medidata Solutions, Inc. | 3,788,033 | 6.6% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | Medidata Solutions, Inc. | 4,639,784 | 8.0% | EDGAR |
| SC 13G/A | 2017-02-09 | BROWN CAPITAL MANAGEMENT LLC | Medidata Solutions, Inc. | 5,888,776 | 10.2% | EDGAR |
| SC 13G/A | 2017-01-12 | BlackRock Inc. | Medidata Solutions, Inc. | 6,159,391 | 10.7% | EDGAR |
| SC 13G/A | 2016-12-09 | BlackRock Inc. | Medidata Solutions, Inc. | 6,000,594 | 10.4% | EDGAR |
| SC 13G/A | 2016-04-11 | BROWN CAPITAL MANAGEMENT LLC | Medidata Solutions, Inc. | 6,205,701 | 11.0% | EDGAR |
| SC 13G/A | 2016-03-10 | FMR LLC | Medidata Solutions, Inc. | 5,611,153 | 10.1% | EDGAR |
| SC 13G/A | 2016-03-08 | BROWN CAPITAL MANAGEMENT LLC | Medidata Solutions, Inc. | 6,106,819 | 10.8% | EDGAR |