Kathryn A. Walker - 02 Sep 2021 Form 4 Insider Report for ADTRAN INC (ADTN)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ADTN	Dividend Equivalent Rights	Award	$0	+26	+43%	$0.000000	88	02 Sep 2021	Common Stock	26		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	Dividend equivalent rights accrue when and as dividends are paid on the Company's common stock. The rights are paid in whole shares of common stock with the remainder paid in cash upon vesting of restricted stock units. Each dividend equivalent right is the equivalent of one share of the Company's common stock.