Corso Joseph John 4

What Happened
Joseph John Corso, Chief Financial Officer of NLIGHT, sold a total of 7,657 shares in two open-market transactions: 3,840 shares on 2026-06-03 at $77.99 ($299,482) and 3,817 shares on 2026-06-04 at $72.90 ($278,259), for aggregate proceeds of approximately $577,741. These were sales (not purchases).

Key Details

• Transaction dates & prices: 2026-06-03 — 3,840 sh @ $77.99 (F2); 2026-06-04 — 3,817 sh @ $72.90 (F5). Total ≈ $577,741.
• Transaction type: Open-market sales (code S). Some sales were sell-to-cover to satisfy tax withholding on RSU vesting (F1); others were effected under a Rule 10b5-1 trading plan adopted 9/15/2025 (F4).
• Shares owned after transaction: Not specified in the filing; filing notes that amounts include common stock owned and unvested restricted stock units (F3).
• Filing: Report filed 2026-06-05 for transactions on 6/3 and 6/4 — appears timely under Form 4 reporting rules.

Context

• Sell-to-cover transactions are routine: shares are sold solely to cover tax withholding on vested restricted stock units and are not discretionary purchases/sales by the insider.
• Transactions executed under a Rule 10b5-1 plan are preplanned and reduce the extent to which the trades reflect current insider sentiment.