![Nathan Partain](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Nathan Partain
Chairman at
OTTER TAIL CORPORATION
Net worth: 8 M $ as of 2026-07-30
Profile
Nathan Ivey Partain is currently President, Chief Executive Officer & Director at Duff & Phelps Gbl Utility & Midstream Energy Income Fund since 2011.
Chairman at Otter Tail Corp.
since 2011.
Independent Director at Northwest Natural Gas Co. and Northwest Natural Holding Co. since 2021.
Member of CFA Society of Chicago.
Formerly President, Chief Executive Officer, Director & CIO at DNP Select Income Fund from 2011 to 2017.
President & Chief Executive Officer at Duff & Phelps Utility & Corporate Bond Trust Inc. from 2004 to 2013.
President, Chief Executive Officer & Director at Duff & Phelps Utility and Infrastructure Fund Inc. from 2011 to 2021.
Director-Utility Research at Duff & Phelps Investment Research Co. from 1989 to 1996.
Director at DTF Tax-Free Income 2028 Term Fund Inc. from 2007 to 2009.
Analyst at Entergy Gulf States Louisiana, Inc. President & Co-Chief Investment Officer at Duff & Phelps Investment Management Co. from 2005 to 2020.
Education includes undergraduate and MBA degrees from Sam Houston State University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-04-12 | 80,130 ( 0.19% ) | 7 M $ | 2026-07-30 | |
| 2025-12-30 | 10,829 ( 0.03% ) | 529 755 $ | 2026-07-30 |
Nathan Partain active positions
| Companies | Position | Start |
|---|---|---|
| OTTER TAIL CORPORATION | Chairman | 2011-11-07 |
| NORTHWEST NATURAL HOLDING COMPANY | Director/Board Member | 2020-12-31 |
Duff & Phelps Gbl Utility & Midstream Energy Income Fund
 Duff & Phelps Gbl Utility & Midstream Energy Income Fund Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Chief Executive Officer | 2011-03-23 |
Northwest Natural Gas Co.
 Northwest Natural Gas Co. Gas DistributorsUtilities Provides natural gas distribution services | Director/Board Member | 2020-12-31 |
CFA Society of Chicago
 CFA Society of Chicago Miscellaneous Commercial ServicesCommercial Services Operates as a forum for education, knowledge sharing and career development for investment professionals | Corporate Officer/Principal | - |
Former positions of Nathan Partain
| Companies | Position | End |
|---|---|---|
Duff & Phelps Investment Management Co.
 Duff & Phelps Investment Management Co. Investment ManagersFinance Duff & Phelps provides specialty investment strategies that enhance client outcomes through active portfolio management and customized solutions. Their investment strategies include global listed infrastructure, global listed real estate, MLPs & Energy, international equities, investment grade fixed income and domestic securities. In the portfolio construction process, the firm utilizes top-down macro considerations with fundamental bottom-up company research analysis. | President | 2020-12-30 |
Duff & Phelps Investment Research Co. | Corporate Officer/Principal | 1995-12-31 |
Entergy Gulf States Louisiana, Inc.
 Entergy Gulf States Louisiana, Inc. Electric UtilitiesUtilities Generates, transmits and retails electricity | Corporate Officer/Principal | - |
| DUFF & PHELPS UTILITY AND INFRASTRUCTURE FUND INC. | Chief Executive Officer | 2021-02-28 |
| ░░░░ ░░░░░ ░░░░░░ ░░░░░░░ ░░░ ░░░░░░░░░ ░░░░ ░░░░░ ░░░░ | ░░░░░ ░░░░░░░░░ ░░░░░░░ | - |
Training of Nathan Partain
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
61
1st degree connections
13
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 13 |
|---|---|
Northwest Natural Gas Co.
Northwest Natural Gas Co. Gas DistributorsUtilities Provides natural gas distribution services | Utilities |
Otter Tail Corp.
 Otter Tail Corp. Electric UtilitiesUtilities Manufactures plastics pipes and generates power | Utilities |
Entergy Gulf States Louisiana, Inc.
Entergy Gulf States Louisiana, Inc. Electric UtilitiesUtilities Generates, transmits and retails electricity | Utilities |
Duff & Phelps Investment Management Co.
Duff & Phelps Investment Management Co. Investment ManagersFinance Duff & Phelps provides specialty investment strategies that enhance client outcomes through active portfolio management and customized solutions. Their investment strategies include global listed infrastructure, global listed real estate, MLPs & Energy, international equities, investment grade fixed income and domestic securities. In the portfolio construction process, the firm utilizes top-down macro considerations with fundamental bottom-up company research analysis. | Finance |
Duff & Phelps Gbl Utility & Midstream Energy Income Fund
Duff & Phelps Gbl Utility & Midstream Energy Income Fund Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Miscellaneous |
DNP Select Income Fund
 DNP Select Income Fund Investment Trusts/Mutual FundsMiscellaneous Functions as a closed-end investment fund or Investment trust | Miscellaneous |
Duff & Phelps Utility and Infrastructure Fund Inc.
 Duff & Phelps Utility and Infrastructure Fund Inc. Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Miscellaneous |
DTF Tax-Free Income 2028 Term Fund Inc.
 DTF Tax-Free Income 2028 Term Fund Inc. Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Miscellaneous |
Duff & Phelps Utility & Corporate Bond Trust Inc.
 Duff & Phelps Utility & Corporate Bond Trust Inc. Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Miscellaneous |
Sam Houston State University
 Sam Houston State University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
CFA Society of Chicago
CFA Society of Chicago Miscellaneous Commercial ServicesCommercial Services Operates as a forum for education, knowledge sharing and career development for investment professionals | Commercial Services |
Duff & Phelps Investment Research Co. | Commercial Services |
Northwest Natural Holding Co.
 Northwest Natural Holding Co. Gas DistributorsUtilities Operates as holding company whose subsidiaries maintains natural gas distribution system | Utilities |
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