| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | NATUS MEDICAL INC | 2,245,064 | 7.2% | EDGAR |
| SC 13G | 2018-02-09 | DIMENSIONAL FUND ADVISORS LP | NATUS MEDICAL INC | 1,619,337 | 5.2% | EDGAR |
| SC 13G | 2018-02-08 | WELLINGTON MANAGEMENT GROUP LLP | NATUS MEDICAL INC | 1,924,157 | 6.2% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | NATUS MEDICAL INC | 4,032,681 | 12.9% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | NATUS MEDICAL INC | 2,169,862 | 6.6% | EDGAR |
| SC 13G/A | 2017-01-17 | BlackRock Inc. | NATUS MEDICAL INC | 3,801,716 | 11.6% | EDGAR |
| SC 13G/A | 2016-04-08 | BlackRock Inc. | NATUS MEDICAL INC | 3,359,844 | 10.1% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | NATUS MEDICAL INC | 2,529,501 | 7.7% | EDGAR |
| SC 13G/A | 2016-01-27 | BlackRock Inc. | NATUS MEDICAL INC | 3,223,543 | 9.8% | EDGAR |
| SC 13G/A | 2016-01-25 | EAGLE ASSET MANAGEMENT INC | NATUS MEDICAL INC | 3,140,847 | 9.5% | EDGAR |
| SC 13G | 2015-02-10 | VANGUARD GROUP INC | NATUS MEDICAL INC | 1,704,900 | 5.2% | EDGAR |
| SC 13G/A | 2015-02-03 | EAGLE ASSET MANAGEMENT INC | NATUS MEDICAL INC | 3,512,626 | 10.8% | EDGAR |
| SC 13G/A | 2015-01-15 | BlackRock Inc. | NATUS MEDICAL INC | 3,071,549 | 9.4% | EDGAR |
| SC 13G/A | 2015-01-06 | EAGLE ASSET MANAGEMENT INC | NATUS MEDICAL INC | 3,205,161 | 9.8% | EDGAR |
| SC 13G/A | 2014-02-14 | Broadfin Capital, LLC | NATUS MEDICAL INC | 1,014,116 | 3.3% | EDGAR |
| SC 13G/A | 2014-02-13 | ORBIMED ADVISORS LLC | NATUS MEDICAL INC | 0 | 0.0% | EDGAR |
| SC 13G/A | 2014-02-11 | VANGUARD GROUP INC | NATUS MEDICAL INC | 1,096,719 | 3.5% | EDGAR |
| SC 13G/A | 2014-01-30 | BlackRock Inc. | NATUS MEDICAL INC | 2,807,414 | 9.1% | EDGAR |
| SC 13G | 2014-01-27 | EAGLE ASSET MANAGEMENT INC | NATUS MEDICAL INC | 1,741,554 | 5.6% | EDGAR |
| SC 13G/A | 2013-07-12 | Camber Capital Management LLC | NATUS MEDICAL INC | - | - | EDGAR |