Selective Insurance Group, Inc.
US ˙ NasdaqGS ˙ US8163001071

SecuritySIGI / Selective Insurance Group, Inc.
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership425,463 shares
Latest Disclosed Value $ 32,075,656
Boston Trust Walden Corp reports 10.66% decrease in ownership of SIGI / Selective Insurance Group, Inc.

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 425,463 shares of Selective Insurance Group, Inc. (US:SIGI) valued at $32,075,656 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 476,211 shares of Selective Insurance Group, Inc.. This represents a change in shares of -10.66% during the quarter. The current value of the position is $36,381,341 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)
2026-04-24 2026-03-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 425,463 -50,748 -10.66 32,076 -19.50 0.1577
2026-01-28 2025-12-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 476,211 -141,289 -22.88 39,845 -20.41 0.1803
2025-10-17 2025-09-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 617,500 -492,422 -44.37 50,061 -47.95 0.3673
2025-07-28 2025-06-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 1,109,922 63,255 6.04 96,175 0.38 0.6860
2025-04-21 2025-03-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 1,046,667 -8,654 -0.82 95,812 -2.92 0.7000
2025-01-24 2024-12-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 1,055,321 84,341 8.69 98,694 8.94 0.6925
2024-10-24 2024-09-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 970,980 -17,866 -1.81 90,592 -2.36 0.6302
2024-07-19 2024-06-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 988,846 11,327 1.16 92,783 -13.06 0.6882
2024-04-22 2024-03-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 977,519 -5,501 -0.56 106,716 9.13 0.7612
2024-01-24 2023-12-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 983,020 17,800 1.84 97,791 -1.80 0.7378
2023-10-18 2023-09-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 965,220 92,801 10.64 99,582 18.96 0.8345
2023-07-24 2023-06-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 872,419 39,626 4.76 83,709 5.44 0.6865
2023-04-19 2023-03-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 832,793 352,559 73.41 79,390 86.57 0.6852
2023-01-20 2022-12-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 480,234 -4,152 -0.86 42,554 7.92 0.3742
2022-10-19 2022-09-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 484,386 14,727 3.14 39,429 -3.44 0.3906
2022-07-22 2022-06-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 469,659 3,922 0.84 40,832 -1.89 0.3858
2022-04-20 2022-03-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 465,737 9,187 2.01 41,618 11.25 0.3438
2022-01-21 2021-12-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 456,550 563 0.12 37,409 8.62 0.3004
2021-10-25 2021-09-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 455,987 8,860 1.98 34,440 -5.08 0.3050
2021-07-22 2021-06-30 13F SELECTIVE INS GROUP COMMON STOCK 816300107 447,127 128,078 40.14 36,284 56.77 0.3226
2021-04-21 2021-03-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 319,049 81,735 34.44 23,144 45.61 0.2241
2021-01-15 2020-12-31 13F SELECTIVE INS GROUP COMMON STOCK 816300107 237,314 237,314 15,895 0.1696
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.