# Donald Sienkiewicz

> Donald Sienkiewicz is a fee-only financial advisor at J. R. Prunier Capital Management in Holden, Massachusetts, who holds the CFP credential. Donald focuses on family wealth transfer, small business owners and retirement planning. J. R. Prunier Capital Management reports charging a percentage of assets and fixed fees on its Form ADV.

Page: https://find.wellspent.co/advisors/donald-sienkiewicz/
Built from SEC adviser records and the firm's website; last checked October 30, 2026.

## Facts

- **Firm:** J. R. Prunier Capital Management
- **Based in:** Holden, Massachusetts
- **Fee model (firm's Form ADV):** Percentage of assets; Fixed fees
- **Assets under management (firm):** $407.0M across 424 accounts
- **Credentials:** CFP
- **Specialties:** Family wealth transfer, Small business owners, Retirement planning, Sustainable & impact investing
- **Works with:** Multi-generational families
- **CRD:** 7432087 (https://adviserinfo.sec.gov/individual/summary/7432087)
- **SEC registration:** Investment adviser representative in MA, NH, TX
- **Firm size:** 3 employees
- **Disclosures:** Reported; see the SEC record
- **Website:** https://www.jrprunier.com

## Frequently asked questions

### Is Donald Sienkiewicz a fee-only financial advisor?

Yes, according to SEC records as of October 29, 2026: Donald holds no broker registration, and J. R. Prunier Capital Management reports no commissions, no broker-dealer, and no insurance sales or affiliated insurance agency on its Form ADV.

### How does Donald charge for financial advice?

Donald's firm, J. R. Prunier Capital Management, reports charging a percentage of assets and fixed fees on its SEC Form ADV.

### Where is Donald Sienkiewicz based?

Donald Sienkiewicz is based in Holden, Massachusetts.

### What does Donald specialize in?

Donald's specialties include family wealth transfer, small business owners, retirement planning and sustainable & impact investing. Donald works with multi-generational families.

### What credentials does Donald Sienkiewicz hold?

Donald Sienkiewicz holds the CFP credential.

### Is Donald Sienkiewicz registered with the SEC?

Yes. Donald Sienkiewicz is registered as an investment adviser representative in MA, NH and TX (CRD 7432087), per SEC Investment Adviser Public Disclosure data as of October 29, 2026. The record lists disclosures; see the SEC record for details.

### How much does J. R. Prunier Capital Management manage?

J. R. Prunier Capital Management reports $407.0M across 424 accounts in assets under management.

### How do I contact Donald Sienkiewicz?

Through Donald's website, www.jrprunier.com.

## Sources

- SEC adviser records (https://adviserinfo.sec.gov/individual/summary/7432087): the firm's Form ADV reports no commissions, no broker-dealer, and no insurance sales or affiliated insurance agency, and the advisor holds no broker registration
- SEC Investment Adviser Public Disclosure and Form ADV: registration, exams, and firm facts, data as of October 29, 2026
- The firm's website (https://www.jrprunier.com/): specialties, clients served, and fees, checked October 30, 2026

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Source: Wellspent, the public graph of fee-only advisors (https://find.wellspent.co). No paid placement.