UNITIL Corporation
Ownership
Ownership Structure
Who owns UNITIL Corporation (UTL)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 97.7% of the shares are freely tradable; institutional investors hold 83.5%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.86 | 2,893,170 | +2.1 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.41 | 803,469 | -0.8 | 06/30/2026 |
| State Street Corp | 4.29 | 782,195 | +6.4 | 06/30/2026 |
| Frontier Capital Management CO Inc | 3.03 | 553,320 | +0.8 | 06/30/2026 |
| Manufacturers Life Insurance Co | 2.80 | 509,855 | -0.2 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 2.78 | 506,993 | -0.2 | 06/30/2026 |
| Wellington Management Company LLP | 2.70 | 491,474 | -18.4 | 06/30/2026 |
| JPMorgan Chase & Co | 2.61 | 475,940 | -2.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.95 | 1,085,228 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.23 | 589,660 | +1.4 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Collin Mark H | Director | 61,109 | 3,391,558 $ | Oct 1, 2026 | direct |
| Vogel Justine | Director | 14,406 | 799,533 $ | Oct 1, 2026 | direct |
| Foster Suzanne | Director | 14,406 | 799,533 $ | Oct 1, 2026 | direct |
| Whiteley David A | Director | 13,305 | 738,428 $ | Oct 1, 2026 | direct |
| Kountze Katherine | Director | 3,896 | 216,228 $ | Oct 1, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 1, 2026 | Vogel Justine | Director | Other | 2,272 | 0.00 | – |
| Oct 1, 2026 | Kountze Katherine | Director | Other | 2,272 | 0.00 | – |
| Oct 1, 2026 | Foster Suzanne | Director | Other | 2,272 | 0.00 | – |
| Oct 1, 2026 | Collin Mark H | Director | Other | 2,272 | 0.00 | – |
| Oct 1, 2026 | Whiteley David A | Director | Other | 2,272 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.