CUSIP No. 22658D100

EXHIBIT A

TRANSACTIONS EFFECTED SINCE THE FILING OF AMENDMENT NO. 12 TO THE SCHEDULE 13D

All of the below transactions in the Common Stock were traded in the ordinary course on the NASDAQ Stock Market.

Abdiel Capital Advisors, LP serves as the investment manager of Abdiel Qualified Master Fund, LP and effected the below transactions.

Transaction Date	Transaction Type		Amount of Securities		Price Per Share
9/20/2021		Purchase		158,344	$	29.95	(1)
9/21/2021		Purchase		39,508	$	30.76	(2)
9/21/2021		Purchase		22,307	$	31.30	(3)
9/22/2021		Purchase		9,529	$	30.93	(4)
9/22/2021		Purchase		30,594	$	31.43	(5)
9/22/2021		Purchase		194	$	32.00

Abdiel Capital Advisors, LP serves as the investment manager of Abdiel Capital, LP and effected the below transactions.

Transaction Date	Transaction Type		Amount of Securities		Price Per Share
9/20/2021		Purchase		4,969	$	29.95	(1)
9/21/2021		Purchase		1,265	$	30.76	(2)
9/21/2021		Purchase		715	$	31.30	(3)
9/22/2021		Purchase		297	$	30.93	(4)
9/22/2021		Purchase		953	$	31.43	(5)
9/22/2021		Purchase		6	$	32.00

(1) The price reported for the Common Stock is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $29.45 to $30.30. The Reporting Persons undertake to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

(2) The price reported for the Common Stock is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $30.13 to $30.98. The Reporting Persons undertake to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

(3) The price reported for the Common Stock is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $31.00 to $31.45. The Reporting Persons undertake to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

(4) The price reported for the Common Stock is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $30.85 to $30.99. The Reporting Persons undertake to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

(5) The price reported for the Common Stock is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $31.00 to $31.99. The Reporting Persons undertake to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.