Buller Richard E 4
4 · Celcuity Inc. · Filed May 6, 2026
Research Summary
AI-generated summary of this filing
Celcuity (CELC) Director Richard Buller Exercises Options, Sells Shares
What Happened
- Richard E. Buller, a director of Celcuity Inc. (CELC), exercised 9,000 options at $5.10 per share (cost $45,900) on May 4, 2026, and sold a total of 9,000 common shares in multiple open-market trades the same day for aggregate proceeds of approximately $1,264,181. The transactions were effected under a Rule 10b5-1 trading plan.
Key Details
- Transaction date: May 4, 2026; Form filed May 6, 2026 (timely).
- Option exercise (code M): 9,000 shares acquired at $5.10 each; total cash paid $45,900. Options were 100% vested (F8).
- Sales (code S): 9,000 shares sold in several trades at prices ranging roughly from $137.00 to $143.24 (weighted average proceeds ≈ $1,264,181). Footnotes F3–F7 list the weighted-average price ranges for the grouped trades; the filing offers to provide breakdowns on request.
- Plan and ownership notes: Sales and option exercise were made pursuant to a 10b5-1 plan adopted Dec 8, 2025 (F1). The reporting person and spouse are trustees/beneficiaries of a trust holding certain shares that he continues to beneficially own (F2).
- Shares owned after the transaction: not specified in the supplied filing lines; filing notes the trust holdings remain beneficially owned.
Context
- This is effectively a cashless exercise: Buller exercised options and sold the same number of shares the same day, which is a common way to cover exercise costs and taxes rather than a fresh cash purchase (M = option exercise; S = sale).
- Transactions were executed under a prearranged 10b5-1 plan, which typically schedules trades in advance and reduces inference about timing or intent.
Insider Transaction Report
Form 4
Celcuity Inc.CELC
Buller Richard E
Director
Transactions
- Exercise/Conversion
Common Stock
[F1][F2]2026-05-04$5.10/sh+9,000$45,900→ 15,760 total(indirect: By Trust) - Sale
Common Stock
[F1][F2]2026-05-04$137.00/sh−1,289$176,593→ 14,471 total(indirect: By Trust) - Sale
Common Stock
[F1][F3][F2]2026-05-04$139.00/sh−550$76,448→ 13,921 total(indirect: By Trust) - Sale
Common Stock
[F1][F4][F2]2026-05-04$139.58/sh−1,670$233,104→ 12,251 total(indirect: By Trust) - Sale
Common Stock
[F1][F5][F2]2026-05-04$141.03/sh−2,301$324,503→ 9,950 total(indirect: By Trust) - Sale
Common Stock
[F1][F6][F2]2026-05-04$142.04/sh−2,825$401,251→ 7,125 total(indirect: By Trust) - Sale
Common Stock
[F1][F7][F2]2026-05-04$143.24/sh−365$52,282→ 6,760 total(indirect: By Trust) - Exercise/Conversion
Stock Option (right to buy)
[F1][F8][F2]2026-05-04−9,000→ 654 total(indirect: By Trust)Exercise: $5.10Exp: 2030-05-14→ Common Stock (9,000 underlying)
Holdings
- 1,029
Common Stock
Footnotes (8)
- [F1]The sales and option exercise reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 8, 2025.
- [F2]The Reporting Person and his spouse are the trustees and beneficiaries. The Reporting Person continues to beneficially own these securities held by the trust.
- [F3]The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $138.255 to $139.16, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
- [F4]The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $139.40 to $140.20, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
- [F5]The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $140.50 to $141.33, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
- [F6]The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $141.59 to $142.50, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
- [F7]The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $143.20 to $143.46, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
- [F8]100% vested.
Signature
/s/ Griffin D. Foster as Attorney-in-Fact for Richard E. Buller pursuant to Power of Attorney previously filed|2026-05-06