MEDNAX INC

Ticker: MD CUSIP: 58502B106 Class: EQTY

YHB Investment Advisors, Inc.'s Holding History (CIK: 0001469219)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018

Shares 3,690 Value ($000) $205 Avg Close $54.82 Range $48.74 - $63.04

Q4 2017

Shares 4,390 Value ($000) $235 Avg Close $47.18 Range $40.56 - $54.05

Q2 2017

Shares 4,490 Value ($000) $271 Avg Close $59.28 Range $53.80 - $69.57

Q1 2017

Shares 4,490 Value ($000) $271 Avg Close $69.46 Range $64.05 - $72.13

Q4 2016

Shares 3,740 Value ($000) $249 Avg Close $65.05 Range $59.36 - $69.68

Q3 2016

Shares 3,940 Value ($000) $261 Avg Close $68.40 Range $62.63 - $76.96

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	3,690	$205	$54.82	$48.74 - $63.04
Q4 2017	4,390	$235	$47.18	$40.56 - $54.05
Q2 2017	4,490	$271	$59.28	$53.80 - $69.57
Q1 2017	4,490	$271	$69.46	$64.05 - $72.13
Q4 2016	3,740	$249	$65.05	$59.36 - $69.68
Q3 2016	3,940	$261	$68.40	$62.63 - $76.96