Exhibit 99.(g)(viii)

 

August 26, 2024

State Street Bank and Trust Company

1 Iron Street

Boston, MA 02210

Attention: Scott Shirrell, Vice President, Managing Director

Re: Calamos ETF Trust (the “Fund”)

Ladies and Gentlemen:

Please be advised that the undersigned Fund has been incorporated and registered as a management investment company under the Investment Company Act of 1940, as amended, and each Fund has established those new series of shares identified under its name on Exhibit A hereto (each, a “Portfolio”).

In accordance with Section 19.6, the Additional Portfolios provision, of the Master Custodian Agreement dated as of September 11, 2009, as amended, modified, or supplemented from time to time (the “Agreement”), by and among each registered investment company party thereto, and State Street Bank and Trust Company (“State Street”), the undersigned Fund, on behalf of its respective Portfolios, hereby requests that State Street act as Custodian for the Portfolios under the terms of the Agreement, and that Appendix A to the Agreement is hereby amended and restated as set forth on Exhibit B attached hereto. In connection with such request, each undersigned Fund hereby confirms, as of the date hereof, its representations and warranties set forth in Section 19.7 of the Agreement.

Please indicate your acceptance of the foregoing by executing this letter agreement and returning a copy to the Fund.

Sincerely,

Calamos ETF trust

on behalf of:

CALAMOS NASDAQ-100 STRUCTURED ALT PROTECTION ETF – SEPTEMBER

CALAMOS S&P 500 STRUCTURED ALT PROTECTION ETF – SEPTEMBER

CALAMOS LADDERED S&P 500 STRUCTURED ALT PROTECTION ETF

By:	/s/ Stephen M. Atkins
Name:	Stephen Atkins
Title:	Treasurer, Duly Authorized

Agreed and Accepted:

STATE STREET BANK AND TRUST COMPANY

By:	/s/ Scott Shirrell
Name:	Scott F. Shirrell
Title:	Managing Director, Duly Authorized
Effective Date:	August 26, 2024

Information Classification: Limited Access

EXHIBIT A

Calamos ETF Trust

Calamos Nasdaq-100 Structured Alt Protection ETF – September

Calamos S&P 500 Structured Alt Protection ETF – September

Calamos Laddered S&P 500 Structured Alt Protection ETF

Information Classification: Limited Access

EXHIBIT B

Appendix A

to

Master Custodian Agreement

Management Investment Companies Registered with the SEC and Portfolios thereof, if any

Calamos Advisors Trust
	Calamos Growth and Income Portfolio	36-7271106
Calamos ETF Trust
	Calamos Antetokounmpo Global Sustainable Equities ETF	88-4166679
	Calamos Convertible Equity Alternative ETF	93-1403228
	Calamos CEF Income & Arbitrage ETF	93-3384806
	Calamos Alternative Nasdaq & Bond ETF	93-4047483
	Calamos S&P 500 Structured Alt Protection ETF – May	99-1891857
	Calamos S&P 500 Structured Alt Protection ETF – July	99-2036587
	Calamos S&P 500 Structured Alt Protection ETF – August	99-2010412
	Calamos Nasdaq-100 Structured Alt Protection ETF – June	99-2246961
	Calamos Russell 2000 Structured Alt Protection ETF – July	99-3084638
	Calamos Nasdaq-100 Structured Alt Protection ETF – September	99-2264630
	Calamos S&P 500 Structured Alt Protection ETF – September	99-2059476
	Calamos Laddered S&P 500 Structured Alt Protection ETF	99-4100530
Calamos Investment Trust
	Calamos Convertible Fund	36-3316238
	Calamos Dividend Growth Fund	46-2951829
	Calamos Evolving World Growth Fund	26-2192228
	Calamos Global Convertible Fund	47-2271491
	Calamos Global Equity Fund	20-8166626
	Calamos Global Opportunities Fund	36-4088206
	Calamos Growth Fund	36-3723359
	Calamos Growth and Income Fund	36-3575418
	Calamos Hedged Equity Fund	47-2255361
	Calamos High Income Opportunities Fund	36-4307069
	Calamos International Growth Fund	20-2395043
	Calamos Market Neutral Income Fund	36-3723358
	Calamos Select Fund	22-3848966
	Calamos Phineus Long/Short Fund	47-5668954
	Calamos Total Return Bond Fund	20-8872705
	Calamos Short-Term Bond Fund	83-0775729
	Calamos Timpani Small Cap Growth Fund	83-3325222
	Calamos Timpani SMID Growth Fund	83-4647954
	Calamos International Small Cap Growth Fund	87-4563290
	Calamos Merger Arbitrage Fund	93-1422103
Calamos Antetokounmpo Sustainable Equities Trust
	Calamos Antetokounmpo Sustainable Equities Fund	88-3877464
Calamos Convertible Opportunities and Income Fund		03-0426532
Calamos Convertible and High Income Fund		02-0683363

Information Classification: Limited Access

EXHIBIT A

Calamos Strategic Total Return Fund	04-3785941
Calamos Global Total Return Fund	20-3377281
Calamos Global Dynamic Income Fund	20-8819776
Calamos Dynamic Convertible and Income Fund	47-1549409
Calamos Long/Short Equity & Dynamic Income Trust	82-2860404

Information Classification: Limited Access