Comparable stake leader
T. Rowe Price Investment Management, Inc.
SEC ownership of NISOURCE INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001111711.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
13 Jul 2026
- Public ticker
- NI on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
T. Rowe Price Investment Management, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
T. Rowe Price Investment Management, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
13 Jul 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001111711
- Issuer location
- Merrillville, IN
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of NISOURCE INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
T. Rowe Price Investment ...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
13 Jul 2026
13F
13D/G
3/4/5
Lead comparable stake: 10%
13D/G row: T. Rowe Price Investment Management, Inc.
Showing 1-8 of 50 holder rows.
Quick read
T. Rowe Price Investment Management, Inc. leads the comparable SEC ownership view at 10%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens T. Rowe Price Investment Management, Inc.'s linked filing trail.
Comparable ownership
Top 5
T. Rowe Price Investment Manageme...
10%
VANGUARD CAPITAL MANAGEMENT LLC
7.6%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.6%
STATE STREET CORP
5%
Lloyd M. Yates
0.11%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. |
13F
13D/G
Company
|
10%
from 13D/G
|
$2,324,369,000
49,815,015 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.6%
|
$1,689,832,028
36,215,860 shares
|
$0 | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.6%
|
$1,261,630,875
27,038,810 shares
|
$0 | 31 Mar 2026 |
| STATE STREET CORP |
13F
13D/G
Company · STATE STREET CORPORATION
|
5%
from 13D/G
|
$1,264,599,011
27,102,422 shares
|
— | 31 Mar 2026 |
| Lloyd M. Yates |
3/4/5
Director and President & CEO, Director
|
0.11%
|
$24,798,442
519,557 shares
|
-$950,066 | 21 May 2026 |
| Shawn Anderson |
3/4/5
EVP & CFO
|
0.03%
|
$7,845,592
165,913 shares
|
-$1,033,123 | 27 Feb 2026 |
| Michael Luhrs |
3/4/5
EVP, Tech, Customer & CCO
|
0.03%
|
$5,684,425
120,178 shares
|
— | 27 Feb 2026 |
| Melody Birmingham |
3/4/5
EVP & Grp President, Utilities
|
0.02%
|
$5,503,602
116,036 shares
|
-$590,425 | 14 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$3,733,904.
Buys
$0
Insiders: 0
Sells
$3,733,904
Insiders: 6
Net
-$3,733,904
Shares: -81,195
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 81,195
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 47,405 | $0 | $2,255,691 | -$2,255,691 |
| 3-6 | 0 | 14,675 | $0 | $662,675 | -$662,675 |
| 6-9 | 0 | 8,000 | $0 | $345,040 | -$345,040 |
| 9-12 | 0 | 11,115 | $0 | $470,498 | -$470,498 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 30 reporting-owner rows connected to NISOURCE INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
30
Largest Forms 3/4/5 holder
Lloyd M. Yates
Net 12M change
-$3,733,904
Latest report
13 Jul 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Lloyd M. Yates | Director and President & CEO, Director | $24,798,442 | -$950,066 | -3.7% | Filing P/S | 21 May 2026 |
| Joseph Hamrock | Director, and President & CEO, Director | $14,902,253 | Mixed | 03 Sep 2021 | ||
| Shawn Anderson | Evp & Cfo | $7,845,592 | -$1,033,123 | -12% | Mixed | 27 Feb 2026 |
| Michael Luhrs | EVP, Tech, Customer & CCO | $5,684,425 | Mixed | 27 Feb 2026 | ||
| Melody Birmingham | EVP & Grp President, Utilities | $5,503,602 | -$590,425 | -9.7% | Filing P/S | 14 May 2026 |
| Donald E. Brown | EVP & Chief Innovation Officer | $5,311,174 | Mixed | 06 Mar 2024 | ||
| Violet Sistovaris | EVP & Chief Experience Officer | $4,992,656 | Mixed | 28 Feb 2022 | ||
| William Jefferson Jr. | EVP, Chief Op & Safety Officer | $4,653,137 | Mixed | 27 Feb 2026 | ||
| Michael E. Jesanis | Director | $3,914,567 | Mixed | 13 Jul 2026 | ||
| Pablo Vegas | EVP, COO & President Utilities | $3,896,503 | Mixed | 28 Feb 2022 | ||
| Deborah A. Henretta | Director | $3,599,914 | Mixed | 11 May 2026 | ||
| Melody Birmingham | EVP & Grp President, Utilities | $3,370,742 | Mixed | 28 Feb 2025 | ||
| Eric L. Butler | Director | $3,158,523 | Mixed | 11 May 2026 | ||
| Kimberly S. Cuccia | EVP, GC & Corporate Secretary | $3,139,889 | -$345,040 | -9.9% | Mixed | 27 Feb 2026 |
| KABAT KEVIN T | Director | $3,100,822 | Mixed | 11 May 2026 | ||
| Peter Altabef | Director | $2,641,677 | Mixed | 11 May 2026 | ||
| Theodore H. Bunting Jr. | Director | $2,329,805 | Mixed | 11 May 2026 | ||
| Deborah Hersman | Director | $2,202,336 | Mixed | 11 May 2026 | ||
| Aristides S. Candris | Director | $2,029,414 | Mixed | 23 May 2023 | ||
| Melanie B. Berman | EVP Administration & CHRO | $1,716,000 | -$715,200 | -29% | Filing P/S | 22 May 2026 |
Recent insider transactions for NISOURCE INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Michael E. Jesanis | NI | Common Stock | Other | 134.1% | 30,190 | 52,701 | 13 Jul 2026 | Direct | ||
| Melanie B. Berman | NI | Common Stock | Sale | -29.4% | $715,200 | $47.68 | -15,000 | 35,990 | 22 May 2026 | Direct |
| Lloyd M. Yates | NI | Common Stock | Sale | -3.69% | $950,066 | $47.73 | -19,905 | 519,557 | 21 May 2026 | Direct |
| Melody Birmingham | NI | Common Stock | Sale | -2.11% | $118,575 | $47.43 | -2,500 | 116,036 | 20 May 2026 | Direct |
| Melody Birmingham | NI | Common Stock | Sale | -7.82% | $471,850 | $47.18 | -10,000 | 117,899 | 14 May 2026 | Direct |
| Cassandra S. Lee | NI | Common Stock | Award | 15.1% | 3,807 | 28,974 | 11 May 2026 | Direct | ||
| John McAvoy | NI | Common Stock | Award | 31.8% | 3,807 | 15,777 | 11 May 2026 | Direct | ||
| Kabat Kevin T | NI | Common Stock | Award | 6.08% | 3,807 | 66,456 | 11 May 2026 | Direct | ||
| William D. Johnson | NI | Common Stock | Award | 15.5% | 3,807 | 28,431 | 11 May 2026 | Direct | ||
| Michael E. Jesanis | NI | Common Stock | Award | 20.4% | 3,807 | 22,482 | 11 May 2026 | Direct | ||
| Deborah Hersman | NI | Common Stock | Award | 8.77% | 3,807 | 47,200 | 11 May 2026 | Direct | ||
| Deborah A. Henretta | NI | Common Stock | Award | 5.19% | 3,807 | 77,152 | 11 May 2026 | Direct | ||
| Eric L. Butler | NI | Common Stock | Award | 5.96% | 3,807 | 67,692 | 11 May 2026 | Direct | ||
| Theodore H. Bunting Jr. | NI | Common Stock | Award | 8.25% | 3,807 | 49,932 | 11 May 2026 | Direct | ||
| Sondra L. Barbour | NI | Common Stock | Award | 15% | 3,807 | 29,197 | 11 May 2026 | Direct | ||
| Peter Altabef | NI | Common Stock | Award | 7.21% | 3,807 | 56,615 | 11 May 2026 | Direct | ||
| Lloyd M. Yates | NI | Common Stock | Tax liability | -19.8% | -132,718 | 539,292 | 27 Feb 2026 | Direct | ||
| Lloyd M. Yates | NI | Common Stock | Award | 69.7% | 275,962 | 672,010 | 27 Feb 2026 | Direct | ||
| Michael Luhrs | NI | Common Stock | Tax liability | -20.6% | -31,197 | 120,178 | 27 Feb 2026 | Direct | ||
| Michael Luhrs | NI | Common Stock | Award | 69% | 61,811 | 151,375 | 27 Feb 2026 | Direct | ||
| William Jefferson Jr. | NI | Common Stock | Tax liability | -22.8% | -28,982 | 98,375 | 27 Feb 2026 | Direct | ||
| William Jefferson Jr. | NI | Common Stock | Award | 90.8% | 60,623 | 127,357 | 27 Feb 2026 | Direct | ||
| Gunnar Gode | NI | Common Stock | Tax liability | -7.2% | -2,569 | 33,108 | 27 Feb 2026 | Direct | ||
| Gunnar Gode | NI | Common Stock | Award | 21.9% | 6,420 | 35,677 | 27 Feb 2026 | Direct | ||
| Kimberly S. Cuccia | NI | Common Stock | Tax liability | -19.5% | -15,202 | 62,726 | 27 Feb 2026 | Direct | ||
| Kimberly S. Cuccia | NI | Common Stock | Award | 65.2% | 30,744 | 77,928 | 27 Feb 2026 | Direct | ||
| Melody Birmingham | NI | Common Stock | Tax liability | -21.3% | -34,535 | 127,899 | 27 Feb 2026 | Direct | ||
| Melody Birmingham | NI | Common Stock | Award | 77.8% | 71,094 | 162,434 | 27 Feb 2026 | Direct | ||
| Melanie B. Berman | NI | Common Stock | Tax liability | -22.5% | -14,839 | 50,990 | 27 Feb 2026 | Direct | ||
| Melanie B. Berman | NI | Common Stock | Award | 91.6% | 31,466 | 65,829 | 27 Feb 2026 | Direct | ||
| Shawn Anderson | NI | Common Stock | Tax liability | -14.6% | -28,175 | 165,101 | 27 Feb 2026 | Direct | ||
| Shawn Anderson | NI | Common Stock | Award | 41.2% | 56,434 | 193,276 | 27 Feb 2026 | Direct | ||
| Gunnar Gode | NI | Common Stock | Sale | -6.92% | $100,050 | $46.00 | -2,175 | 29,257 | 18 Feb 2026 | Direct |
| Shawn Anderson | NI | Common Stock | Sale | -8.4% | $562,625 | $45.01 | -12,500 | 136,302 | 13 Feb 2026 | Direct |
| Shawn Anderson | NI | Common Stock | Tax liability | -5% | -7,839 | 148,802 | 26 Jan 2026 | Direct | ||
| Lloyd M. Yates | NI | Common Stock | Award | 12.4% | 43,658 | 395,950 | 22 Jan 2026 | Direct | ||
| Michael Luhrs | NI | Common Stock | Tax liability | -5.68% | -5,393 | 89,564 | 22 Jan 2026 | Direct | ||
| Michael Luhrs | NI | Common Stock | Award | 7.78% | 6,851 | 94,957 | 21 Jan 2026 | Direct | ||
| William Jefferson Jr. | NI | Common Stock | Award | 11.4% | 6,851 | 66,734 | 21 Jan 2026 | Direct | ||
| Gunnar Gode | NI | Common Stock | Award | 5.72% | 1,702 | 31,432 | 21 Jan 2026 | Direct | ||
| Kimberly S. Cuccia | NI | Common Stock | Award | 14.4% | 5,937 | 47,184 | 21 Jan 2026 | Direct | ||
| Melody Birmingham | NI | Common Stock | Award | 8.73% | 7,308 | 90,985 | 21 Jan 2026 | Direct | ||
| Melanie B. Berman | NI | Common Stock | Award | 19% | 5,481 | 34,363 | 21 Jan 2026 | Direct | ||
| Shawn Anderson | NI | Common Stock | Award | 5.7% | 8,449 | 156,641 | 21 Jan 2026 | Direct | ||
| Kimberly S. Cuccia | NI | Common Stock | Sale | -16.2% | $345,040 | $43.13 | -8,000 | 41,247 | 25 Nov 2025 | Direct |
| Shawn Anderson | NI | Common Stock | Sale | -7% | $470,498 | $42.33 | -11,115 | 147,777 | 28 Aug 2025 | Direct |
| Gunnar Gode | NI | Common Stock | Award | 2.08% | 605 | 29,730 | 11 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.