Quick Takeaways
- Nathan I. Partain has 2 issuer positions tracked on this page.
- Estimated disclosed ownership value: $7,444,568.
- Recent insider filing activity is available below.
Insider Trading & Ownership of Nathan I. Partain
- Location
- Fergus Falls, MN
- Summary
- The estimated net worth of Nathan I. Partain is at least $7,444,568 dollars as of 14 Apr 2026. Nathan I. Partain is the Director of Otter Tail Corp and owns shares of Otter Tail Corp (OTTR) stock worth about $7.03M. Nathan I. Partain is the Director of Northwest Natural Holding Co and owns shares of Northwest Natural Holding Co (NWN) stock worth about $411.6K.
- Signature
- /s/ Nathan I. Partain by James A. Versteeg, Attorney-in-Fact
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Nathan I. Partain and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: Otter Tail Corp ($7,033,017).
- Past-year value change for that position: .
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Nathan I. Partain
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| OTTR | Otter Tail Corp | Director | $7,033,017 | 13 Apr 2026 | ||
| NWN | Northwest Natural Holding Co | Director | $411,551 | 06 Nov 2023 |
Insider Transactions Reported by Nathan I. Partain:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.