Knife River Corporation
Knife River Corporation (KNF) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · KNF · as of Jun 8, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Knife River Corporation insiders have shown mixed buying and selling activity over the past 12 Months.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
KNF insider buying and selling by quarter
KNF insider selling · KNF insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · KNF ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
KNF executive sell shares · KNF board member insider trading · KNF insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 20, 2026 | SANDBROOK WILLIAM J Director | Award | 2,040 | — | Form 4 |
| May 20, 2026 | MOSS PATRICIA L Director | Award | 2,040 | — | Form 4 |
| May 20, 2026 | Hill Thomas W. Director | Award | 2,040 | — | Form 4 |
| May 20, 2026 | Fagg Karen B Director | Award | 2,380 | — | Form 4 |
| May 20, 2026 | Chiodo Patricia Director | Award | 2,040 | — | Form 4 |
| May 20, 2026 | Carmona-Alvarez German Director | Award | 2,040 | — | Form 4 |
| Mar 6, 2026 | Gray Brian R. President & CEO · Director | Award | 20,955 | — | Form 4 |
| Mar 4, 2026 | Kadrmas Marney L. VP & Chief Accounting Officer | Award | 1,199 | — | Form 4 |
| Mar 4, 2026 | Pladsen Glenn R. VP & Chief Excellence Officer | Award | 2,950 | — | Form 4 |
| Mar 4, 2026 | LaChapelle Sarah L. VP & Chief People Officer | Award | 2,713 | — | Form 4 |
| Mar 4, 2026 | Liepitz Karl A VP, Chief Legal Officer & Sec. | Award | 4,611 | — | Form 4 |
| Mar 4, 2026 | Ring Nathan W Vice President & CFO | Award | 5,211 | — | Form 4 |
| Mar 4, 2026 | Hastings Trevor J Vice President & COO | Award | 6,130 | — | Form 4 |
| Feb 12, 2026 | Pladsen Glenn R. VP & Chief Excellence Officer | Other | 1,385 | $113K | Form 4 |
| Feb 12, 2026 | Pladsen Glenn R. VP & Chief Excellence Officer | Other | 1,569 | $128K | Form 4 |
| Feb 12, 2026 | Liepitz Karl A VP, Chief Legal Officer & Sec. | Other | 8,648 | $707K | Form 4 |
| Feb 12, 2026 | Gray Brian R. President & CEO · Director | Other | 10,072 | $823K | Form 4 |
| Feb 12, 2026 | Gray Brian R. President & CEO · Director | Other | 19,572 | $1.60M⚡ | Form 4 |
| Feb 12, 2026 | Hastings Trevor J Vice President & COO | Other | 2,880 | $235K | Form 4 |
| Feb 12, 2026 | Hastings Trevor J Vice President & COO | Other | 4,599 | $376K | Form 4 |
| Feb 12, 2026 | Ring Nathan W Vice President & CFO | Other | 1,922 | $157K | Form 4 |
| Feb 12, 2026 | Ring Nathan W Vice President & CFO | Other | 4,336 | $354K | Form 4 |
| Feb 12, 2026 | Kadrmas Marney L. VP & Chief Accounting Officer | Other | 1,232 | $101K | Form 4 |
| May 22, 2025 | SANDBROOK WILLIAM J Director | Award | 1,551 | — | Form 4 |
| May 22, 2025 | MOSS PATRICIA L Director | Award | 1,551 | — | Form 4 |
Kadrmas Marney L.
VP & Chief Accounting Officer
Date
Mar 4
Shares
1,199
Price
—
Value
—
Pladsen Glenn R.
VP & Chief Excellence Officer
Date
Mar 4
Shares
2,950
Price
—
Value
—
LaChapelle Sarah L.
VP & Chief People Officer
Date
Mar 4
Shares
2,713
Price
—
Value
—
Liepitz Karl A
VP, Chief Legal Officer & Sec.
Date
Mar 4
Shares
4,611
Price
—
Value
—
Pladsen Glenn R.
VP & Chief Excellence Officer
Date
Feb 12
Shares
1,385
Price
$81.74
Value
$113K
Pladsen Glenn R.
VP & Chief Excellence Officer
Date
Feb 12
Shares
1,569
Price
$81.74
Value
$128K
Liepitz Karl A
VP, Chief Legal Officer & Sec.
Date
Feb 12
Shares
8,648
Price
$81.74
Value
$707K
Gray Brian R.
President & CEO · Director
Date
Feb 12
Shares
10,072
Price
$81.74
Value
$823K
Gray Brian R.
President & CEO · Director
Date
Feb 12
Shares
19,572
Price
$81.74
Value
$1.60M ⚡
Hastings Trevor J
Vice President & COO
Date
Feb 12
Shares
2,880
Price
$81.74
Value
$235K
Hastings Trevor J
Vice President & COO
Date
Feb 12
Shares
4,599
Price
$81.74
Value
$376K
Ring Nathan W
Vice President & CFO
Date
Feb 12
Shares
1,922
Price
$81.74
Value
$157K
Ring Nathan W
Vice President & CFO
Date
Feb 12
Shares
4,336
Price
$81.74
Value
$354K
Kadrmas Marney L.
VP & Chief Accounting Officer
Date
Feb 12
Shares
1,232
Price
$81.74
Value
$101K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About KNF insider trading
KNF insider trades
Knife River Corporation (KNF) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Gray Brian R. (President & CEO · Director), Pladsen Glenn R. (VP & Chief Excellence Officer), Ring Nathan W (Vice President & CFO). Over the past 12 months, 5 insiders have filed transactions with the SEC. KNF insiders have been mixed buying and selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Knife River Corporation's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
KNF insider trading · 5 questionsThe insiders of Knife River Corporation (KNF) include executives and directors such as Gray Brian R. (President & CEO · Director), Pladsen Glenn R. (VP & Chief Excellence Officer), Ring Nathan W (Vice President & CFO), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026