Mutual Fund Filing and Report Requirements. Open-End Investment Companies (ARS Section 44-3322 through 44-3324) Initial Filing: Form NF, Form U-2, filing fee.Please complete the attached Putnam mutual fund account application to establish one of the registration types below. Use Arizona Form 309-SBI to figure your credit for taxes paid to Arizona and another state or country on the same small business income. Arizona State Treasury Forms. The forms and applications found here contain everything needed to open a new MFS mutual fund account.