# Filing Detail

Form DEF 14A - Other definitive proxy statements:
SEC Accession No. 0001140361-26-011851
Filing Date
2026-03-30
Accepted
2026-03-30 06:31:06
Documents
54
Period of Report
2026-05-11

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | DEF 14A | ny20055306x771_def14a.htm iXBRL | DEF 14A | 2537627
6 | GRAPHIC | logo_nisource2.jpg | GRAPHIC | 42485
7 | GRAPHIC | ny20055306x771_anderson-new.jpg | GRAPHIC | 34446
8 | GRAPHIC | ny20055306x771_birmingham.jpg | GRAPHIC | 35104
9 | GRAPHIC | ny20055306x771_clee.jpg | GRAPHIC | 40636
10 | GRAPHIC | ny20055306x771_cover.jpg | GRAPHIC | 586877
11 | GRAPHIC | ny20055306x771_dhenretta.jpg | GRAPHIC | 42283
12 | GRAPHIC | ny20055306x771_dhersman.jpg | GRAPHIC | 44728
13 | GRAPHIC | ny20055306x771_diversity.jpg | GRAPHIC | 128753
14 | GRAPHIC | ny20055306x771_ebutler.jpg | GRAPHIC | 39764
15 | GRAPHIC | ny20055306x771_jefferson-new.jpg | GRAPHIC | 34071
16 | GRAPHIC | ny20055306x771_johnmcavoy.jpg | GRAPHIC | 40082
17 | GRAPHIC | ny20055306x771_kkabat.jpg | GRAPHIC | 38718
18 | GRAPHIC | ny20055306x771_lloydmyates.jpg | GRAPHIC | 40198
19 | GRAPHIC | ny20055306x771_luhrs-new.jpg | GRAPHIC | 33742
20 | GRAPHIC | ny20055306x771_mjesanis.jpg | GRAPHIC | 40456
21 | GRAPHIC | ny20055306x771_paltabef.jpg | GRAPHIC | 37914
22 | GRAPHIC | ny20055306x771_piechart.jpg | GRAPHIC | 61859
23 | GRAPHIC | ny20055306x771_slbarbour.jpg | GRAPHIC | 39514
24 | GRAPHIC | ny20055306x771_thbunting.jpg | GRAPHIC | 41156
25 | GRAPHIC | ny20055306x771_uncheck.jpg | GRAPHIC | 4351
26 | GRAPHIC | ny20055306x771_wdjohnson.jpg | GRAPHIC | 42229
27 | GRAPHIC | ny20055306x771_yates-new.jpg | GRAPHIC | 35252
28 | GRAPHIC | ny20055306x777_bullet.jpg | GRAPHIC | 4168
29 | GRAPHIC | ny20055306x777_check1.jpg | GRAPHIC | 4362
30 | GRAPHIC | ny20055306x777_check2.jpg | GRAPHIC | 4704
31 | GRAPHIC | ny20055306x777_uncheck.jpg | GRAPHIC | 4351
32 | GRAPHIC | sig_cucciak.jpg | GRAPHIC | 18270
33 | GRAPHIC | ny20055306x771_pc01.jpg | GRAPHIC | 636228
34 | GRAPHIC | ny20055306x771_pc02.jpg | GRAPHIC | 645041
35 | GRAPHIC | ny20055306x771_graphic2.jpg | GRAPHIC | 723673
36 | GRAPHIC | ny20055306x771_graphic4.jpg | GRAPHIC | 136917
37 | GRAPHIC | ny20055306x771_graphic5.jpg | GRAPHIC | 143753
38 | GRAPHIC | ny20055306x771_graphic6.jpg | GRAPHIC | 118463
39 | GRAPHIC | ny20055306x771_pvp1.jpg | GRAPHIC | 235864
40 | GRAPHIC | ny20055306x771_pvp2.jpg | GRAPHIC | 213795
41 | GRAPHIC | ny20055306x771_pvp3.jpg | GRAPHIC | 207739
42 | GRAPHIC | ny20055306x777_bulletx2.jpg | GRAPHIC | 4156
43 | GRAPHIC | ny20055306x777_check1x2.jpg | GRAPHIC | 4350
44 | GRAPHIC | ny20055306x777_check2x2.jpg | GRAPHIC | 4688
| Complete submission text file | 0001140361-26-011851.txt |  | 15816896

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
2 | INLINE XBRL TAXONOMY EXTENSION - SCHEMA | ni-20260511.xsd | EX-101.SCH | 5258
3 | INLINE XBRL TAXONOMY EXTENSION - DEFINITION LINKBASE | ni-20260511_def.xml | EX-101.DEF | 5823
4 | INLINE XBRL TAXONOMY EXTENSION - LABEL LINKBASE | ni-20260511_lab.xml | EX-101.LAB | 7213
5 | INLINE XBRL TAXONOMY EXTENSION - PRESENTATION LINKBASE | ni-20260511_pre.xml | EX-101.PRE | 9083
57 | EXTRACTED XBRL INSTANCE DOCUMENT | ny20055306x771_def14a_htm.xml | XML | 353889

Mailing Address 801 EAST 86TH AVE MERRILLVILLE IN 46410-6272
Business Address 801 EAST 86TH AVE MERRILLVILLE IN 46410-6272 2196475200
NISOURCE INC. (Filer) CIK: 0001111711 (see all company filings)

EIN.: 352108964 | State of Incorp.: DE | Fiscal Year End: 1231
Type: DEF 14A | Act: 34 | File No.: 001-16189 | Film No.: 26809865
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)