Buller Richard E 4

What Happened

• Richard E. Buller, a director of Celcuity, exercised 3,000 option-derived shares on March 31, 2026 (exercise price $5.10), acquiring those shares for $15,300. On the same day he sold a total of 3,000 shares in two open-market transactions for combined gross proceeds of $330,804 (2,325 shares at a weighted avg $110.11 and 675 shares at a weighted avg $110.83). The filing also reports a derivative conversion/disposition of 3,000 shares at $0.00 (M code).

Key Details

• Transaction date: March 31, 2026; Form 4 filed April 2, 2026.
• Exercise (Acquired): 3,000 shares at $5.10 = $15,300.
• Sales (Disposed): 2,325 shares at weighted avg $110.11 (range $109.505–$110.48) = $255,996; 675 shares at weighted avg $110.83 (range $110.50–$111.36) = $74,808. Total sales proceeds = $330,804.
• Derivative entry: 3,000 shares reported disposed at $0.00 (M = exercise/conversion); filing notes 100% vested (F5).
• Plan/notes: Sales and option exercise were made pursuant to a Rule 10b5-1 trading plan adopted Dec 8, 2025 (F1). Reporting person and spouse act as trustees/beneficiaries of a trust holding securities; he continues to beneficially own those trust-held securities (F2).
• Shares owned after transaction: Not specified in the provided excerpt of the filing.
• Timeliness: Form filed April 2, 2026 (appears within the standard two-business-day filing window for Form 4).

Context

• This filing shows an option exercise followed by immediate open-market sales (reported under a pre-established 10b5-1 plan). Exercise cost reported ($15,300) is small relative to the sale proceeds ($330,804). The 10b5-1 designation indicates the sales were pre-planned and routine; it does not, by itself, indicate insider sentiment.