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NI NiSource Inc.

Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.

-$1.6M net selling - trailing 90 days

0 buyers - 1 unique sellers

Historical context: No open-market activity in Sep 2026 — insiders sold in 8 of the last 24 months

10 accumulating - 3 trimming - 0 unchanged

13 comparable institutions - Q2 2026

open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$5.0M$2.5M$0-$2.5M-$5.0M2024-10 $02024-11 $02024-12 $02025-01 $02025-02 -$220K2025-03 -$526K2025-04 $02025-05 -$1.3M2025-06 $02025-07 $02025-08 -$470K2025-09 $02025-10 $02025-11 -$345K2025-12 $02026-01 $02026-02 -$663K2026-03 $02026-04 $02026-05 -$2.3M2026-06 $02026-07 $02026-08 -$1.6M2026-09 $0Institutional shares (majority-gated quarters)200.0M100.0M02025-Q4 170.0M sh2026-Q1 108.6M sh2026-Q2 118.5M shOct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26Q4 2025Q1 2026Q2 2026~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

Who is responsible

Insider Role Net activity Rows
BIRMINGHAM MELODY EVP & Grp President, Utilities -~$1.6M 1

Transactions

Date Insider Role Type Shares Price Value
August 14, 2026 BIRMINGHAM MELODY EVP & Grp President, Utilities S -37509.173 42.4 ~$1.6M
May 22, 2026 Berman Melanie B. EVP Administration & CHRO S -15000 47.68 ~$0.7M
May 21, 2026 Yates Lloyd M Director and President & CEO S -19905 47.73 ~$1.0M
May 20, 2026 BIRMINGHAM MELODY EVP & Grp President, Utilities S -2500 47.43 ~$0.1M
May 14, 2026 BIRMINGHAM MELODY EVP & Grp President, Utilities S -10000 47.185 ~$0.5M
February 18, 2026 Gode Gunnar SVP Chief Accting&Tax Officer S -2175 46 ~$0.1M
February 13, 2026 Anderson Shawn EVP & CFO S -12500 45.01 ~$0.6M
November 25, 2025 Cuccia Kimberly S EVP, GC & Corporate Secretary S -8000 43.13 ~$0.3M
August 28, 2025 Anderson Shawn EVP & CFO S -11115 42.33 ~$0.5M
May 30, 2025 Berman Melanie B. EVP Administration & CHRO S -6227 39.425 ~$0.2M
May 16, 2025 Yates Lloyd M Director and President & CEO S -16127 38.93 ~$0.6M
May 14, 2025 Jesanis Michael E — S -6178 37.81 ~$0.2M
May 13, 2025 Jesanis Michael E — S -4000 38.22 ~$0.2M
March 3, 2025 Anderson Shawn EVP & CFO S -12900 40.79 ~$0.5M
February 14, 2025 Gode Gunnar VP & Chief Accounting Officer S -5500 39.92 ~$0.2M