Unitil Corporation
US ˙ NYSE ˙ US9132591077

SecurityUTL / Unitil Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership235,608 shares
Latest Disclosed Value $ 12,308,162
Northern Trust Corp reports 5.39% increase in ownership of UTL / Unitil Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 235,608 shares of Unitil Corporation (US:UTL) valued at $12,308,162 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 223,564 shares of Unitil Corporation. This represents a change in shares of 5.39% during the quarter. The current value of the position is $11,811,029 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F UNITIL COM 913259107 235,608 12,044 5.39 12,308 13.66 0.0003
2026-02-17 2025-12-31 13F UNITIL COM 913259107 223,564 -3,454 -1.52 10,829 -0.33 0.0014
2025-11-14 2025-09-30 13F UNITIL COM 913259107 227,018 54,208 31.37 10,865 20.56 0.0014
2025-08-13 2025-06-30 13F UNITIL COM 913259107 172,810 -1,954 -1.12 9,012 -10.61 0.0012
2025-05-13 2025-03-31 13F UNITIL COM 913259107 174,764 -11,315 -6.08 10,082 -0.01 0.0015
2025-02-14 2024-12-31 13F UNITIL COM 913259107 186,079 19,631 11.79 10,084 0.00 0.0014
2024-11-13 2024-09-30 13F UNITIL COM 913259107 166,448 -247 -0.15 10,083 16.80 0.0017
2024-08-14 2024-06-30 13F UNITIL COM 913259107 166,695 -2,401 -1.42 8,633 -2.47 0.0015
2024-05-14 2024-03-31 13F UNITIL COM 913259107 169,096 -38,700 -18.62 8,852 -18.96 0.0015
2024-02-13 2023-12-31 13F UNITIL COM 913259107 207,796 1,084 0.52 10,924 23.73 0.0020
2023-11-13 2023-09-30 13F UNITIL COM 913259107 206,712 -2,905 -1.39 8,829 -16.94 0.0017
2023-08-11 2023-06-30 13F UNITIL COM 913259107 209,617 4,837 2.36 10,630 -9.00 0.0020
2023-05-15 2023-03-31 13F UNITIL COM 913259107 204,780 -6,722 -3.18 11,681 7.53 0.0023
2023-02-13 2022-12-31 13F UNITIL COM 913259107 211,502 1,236 0.59 10,863 11.21 0.0023
2022-11-14 2022-09-30 13F UNITIL COM 913259107 210,266 -75 -0.04 9,767 -20.91 0.0022
2022-08-12 2022-06-30 13F UNITIL COM 913259107 210,341 1,867 0.90 12,350 18.77 0.0026
2022-05-13 2022-03-31 13F UNITIL COM 913259107 208,474 -4,574 -2.15 10,398 6.12 0.0018
2022-02-08 2021-12-31 13F UNITIL COM 913259107 213,048 -13,314 -5.88 9,798 1.18 0.0016
2021-11-15 2021-09-30 13F UNITIL COM 913259107 226,362 1,504 0.67 9,684 -18.70 0.0017
2021-08-13 2021-06-30 13F UNITIL COM 913259107 224,858 9,382 4.35 11,911 20.99 0.0021
2021-05-12 2021-03-31 13F UNITIL COM 913259107 215,476 -60,929 -22.04 9,845 -19.55 0.0018
2021-02-11 2020-12-31 13F UNITIL COM 913259107 276,405 -9,810 -3.43 12,237 10.65 0.0024
2020-11-16 2020-09-30 13F UNITIL COM 913259107 286,215 -6,647 -2.27 11,059 -15.75 0.0024
2020-08-14 2020-06-30 13F UNITIL COM 913259107 292,862 101 0.03 13,127 -14.30 0.0031
2020-05-14 2020-03-31 13F UNITIL COM 913259107 292,761 -744 -0.25 15,318 -15.58 0.0044
2020-02-14 2019-12-31 13F UNITIL COM 913259107 293,505 -4,271 -1.43 18,145 -3.95 0.0041
2019-11-13 2019-09-30 13F UNITIL COM 913259107 297,776 5,153 1.76 18,891 7.80 0.0045
2019-08-13 2019-06-30 13F UNITIL COM 913259107 292,623 3,273 1.13 17,524 11.80 0.0042
2019-05-13 2019-03-31 13F UNITIL COM 913259107 289,350 1,278 0.44 15,674 7.44 0.0039
2019-02-12 2018-12-31 13F UNITIL COM 913259107 288,072 94,481 48.80 14,589 48.05 0.0041
2018-11-14 2018-09-30 13F UNITIL COM 913259107 193,591 3,555 1.87 9,854 1.59 0.0024
2018-09-18 2018-06-30 13F/A-1 UNITIL COM 913259107 190,036 -2,881 -1.49 9,700 8.33 0.0025
2018-08-14 2018-06-30 13F UNITIL COM 913259107 190,988 -1,929 9,748
2018-05-09 2018-03-31 13F UNITIL COM 913259107 192,917 6,989 3.76 8,954 5.55 0.0023
2018-02-14 2017-12-31 13F UNITIL COM 913259107 185,928 3,757 2.06 8,483 -5.85 0.0021
2017-11-13 2017-09-30 13F UNITIL COM 913259107 182,171 -413 -0.23 9,010 2.15 0.0023
2017-08-11 2017-06-30 13F UNITIL COM 913259107 182,584 9,419 5.44 8,820 13.12 0.0025
2017-05-12 2017-03-31 13F UNITIL COM 913259107 173,165 -1,903 -1.09 7,797 -1.78 0.0022
2017-02-13 2016-12-31 13F UNITIL COM 913259107 175,068 5,520 3.26 7,938 19.87 0.0024
2016-11-09 2016-09-30 13F UNITIL COM 913259107 169,548 5,952 3.64 6,622 -5.14 0.0021
2016-08-12 2016-06-30 13F UNITIL COM 913259107 163,596 698 0.43 6,981 1.03 0.0023
2016-08-19 2016-03-31 13F/A-1 UNITIL COM 913259107 162,898 4,390 2.77 6,910 21.51 0.0023
2016-05-13 2016-03-31 13F Unitil COMM 913259107 162,898 6,921
2016-02-12 2015-12-31 13F Unitil COMM 913259107 158,508 1,997 1.28 5,687 -1.47 0.0019
2015-11-12 2015-09-30 13F Unitil COMM 913259107 156,511 156,511 0.00 5,772 0.0019
2015-08-13 2015-06-30 13F UNITIL COM 913259107 0 -157,912 -100.00 0 -100.00
2015-05-14 2015-03-31 13F UNITIL COM 913259107 157,912 -3,687 -2.28 5,491 -7.32 0.0017
2015-02-12 2014-12-31 13F UNITIL COM 913259107 161,599 -2,596 -1.58 5,925 16.06 0.0018
2014-11-13 2014-09-30 13F UNITIL COM 913259107 164,195 -8,005 -4.65 5,105 -12.36 0.0016
2014-08-14 2014-06-30 13F UNITIL COM 913259107 172,200 -31,446 -15.44 5,825 -12.89 0.0018
2014-05-14 2014-03-31 13F UNITIL COMM 913259107 203,646 -12,775 -5.90 6,687 1.35 0.0021
2014-02-21 2013-12-31 13F/A-1 UNITIL COM 913259107 216,421 2,054 0.96 6,598 5.15 0.0021
2014-02-12 2013-12-31 13F UNITIL COM 913259107 216,421 6,598
2013-11-13 2013-09-30 13F UNITIL COM 913259107 214,367 -6,254 -2.83 6,275 -1.51 0.0022
2013-08-09 2013-06-30 13F UNITIL COM 913259107 220,621 220,621 6,371 0.0023
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.