Jefferson William Jr. 4

What Happened
Jefferson William Jr., NiSource (NI) Executive Vice President and Chief Operations & Safety Officer, had 60,623 performance stock units vest on Feb 27, 2026, resulting in the acquisition of 60,623 shares at a reported value of $47.30 each (total $2,867,468). To satisfy tax withholding obligations related to the vesting, 25,504 shares ($1,206,339) and 3,478 shares ($164,509) were withheld/disposed, for a total of 28,982 shares withheld ($1.37M). Net shares retained from this vesting equal 31,641 shares (60,623 granted minus 28,982 withheld). This was a vesting/award event, not an open-market purchase or a voluntary sale.

Key Details

• Transaction date: 2026-02-27; Filing date: 2026-03-03 (filed 4 days after the transaction; Form 4s are typically due within 2 business days — appears late).
• Award: 60,623 shares @ $47.30 each = $2,867,468 (code A — award/grant/acquisition).
• Withholding/dispositions for taxes: 25,504 shares @ $47.30 = $1,206,339 and 3,478 shares @ $47.30 = $164,509 (code F — tax withholding). Total withheld: 28,982 shares (~$1,370,848).
• Shares owned after transaction: not specified in the filing; net shares retained from this vesting = 31,641.
• Footnotes: F1 indicates these were vesting non-derivative performance stock units (granted in 2023) exempt from Section 16(b) liability per Rule 16b-3(d). F2 and F3 state the reported disposals represent shares withheld to satisfy tax withholding for the vested performance stock units and a 2023 RSU award.
• Transaction codes: A = award/vesting; F = shares withheld/disposed to cover tax obligations.

Context: This filing reflects routine vesting and tax-withholding activity rather than an insider purchasing or selling stock for investment reasons. For retail investors, vesting-related acquisitions are common compensation events and generally do not by themselves signal a change in the insider’s view of the company. The withholding (F) entries are standard cashless-withholding to cover taxes.