A10 NETWORKS INC

Ticker: ATEN CUSIP: 002121101 Class: Common Stock

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

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

Q1 2021

Shares 172,000 Value ($000) $1,653 Avg Close $9.16 Range $8.05 - $11.09

Q4 2020

Shares 299,500 Value ($000) $2,953 Avg Close $7.35 Range $5.73 - $10.23

Q3 2020

Shares 278,600 Value ($000) $1,775 Avg Close $7.17 Range $5.86 - $8.61

Q2 2020

Shares 221,000 Value ($000) $1,505 Avg Close $6.28 Range $5.31 - $7.19

Q1 2020

Shares 26,600 Value ($000) $165 Avg Close $5.98 Range $3.21 - $7.01

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	172,000	$1,653	$9.16	$8.05 - $11.09
Q4 2020	299,500	$2,953	$7.35	$5.73 - $10.23
Q3 2020	278,600	$1,775	$7.17	$5.86 - $8.61
Q2 2020	221,000	$1,505	$6.28	$5.31 - $7.19
Q1 2020	26,600	$165	$5.98	$3.21 - $7.01