XENCOR INC

Ticker: XNCR CUSIP: 98401F105 Class: Common Stock

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q1 2021

Shares 29,737 Value ($000) $1,281 Avg Close $47.38 Range $39.98 - $58.34

Q4 2020

Shares 48,480 Value ($000) $2,115 Avg Close $41.35 Range $36.62 - $47.85

Q3 2020

Shares 55,480 Value ($000) $2,152 Avg Close $34.74 Range $29.28 - $43.90

Q2 2020

Shares 48,580 Value ($000) $1,574 Avg Close $30.65 Range $26.80 - $34.92

Q1 2020

Shares 36,180 Value ($000) $1,081 Avg Close $33.13 Range $19.35 - $38.73

Q4 2019

Shares 37,780 Value ($000) $1,299 Avg Close $36.53 Range $31.51 - $42.08

Q3 2019

Shares 37,980 Value ($000) $1,281 Avg Close $39.92 Range $33.54 - $46.33

Q2 2019

Shares 47,980 Value ($000) $1,964 Avg Close $32.85 Range $29.01 - $42.33

Q1 2019

Shares 19,537 Value ($000) $606 Avg Close $33.27 Range $27.75 - $39.33

Q4 2018

Shares 19,337 Value ($000) $699 Avg Close $36.69 Range $31.00 - $42.90

Q3 2018

Shares 21,421 Value ($000) $835 Avg Close $40.77 Range $34.94 - $48.38

Q2 2018

Shares 16,621 Value ($000) $615 Avg Close $34.46 Range $27.57 - $43.39

Q1 2018

Shares 20,021 Value ($000) $600 Avg Close $26.15 Range $20.16 - $34.25

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	29,737	$1,281	$47.38	$39.98 - $58.34
Q4 2020	48,480	$2,115	$41.35	$36.62 - $47.85
Q3 2020	55,480	$2,152	$34.74	$29.28 - $43.90
Q2 2020	48,580	$1,574	$30.65	$26.80 - $34.92
Q1 2020	36,180	$1,081	$33.13	$19.35 - $38.73
Q4 2019	37,780	$1,299	$36.53	$31.51 - $42.08
Q3 2019	37,980	$1,281	$39.92	$33.54 - $46.33
Q2 2019	47,980	$1,964	$32.85	$29.01 - $42.33
Q1 2019	19,537	$606	$33.27	$27.75 - $39.33
Q4 2018	19,337	$699	$36.69	$31.00 - $42.90
Q3 2018	21,421	$835	$40.77	$34.94 - $48.38
Q2 2018	16,621	$615	$34.46	$27.57 - $43.39
Q1 2018	20,021	$600	$26.15	$20.16 - $34.25