Celcuity (CELC) director exercises options and completes 9,000-share planned sale
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Celcuity Inc. director Richard E. Buller exercised stock options for 9,000 shares of common stock at $5.10 per share through a trust, then sold 9,000 shares in multiple open-market trades around $137–$143. These transactions were executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 8, 2025. Following the transactions, he holds 1,029 shares directly, 15,760 shares indirectly through the trust, and 654 remaining stock options at a $5.10 exercise price expiring on May 14, 2030.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Net Seller: 9,000 shares ($1,264,181)
Net Sell
9 txns
Insider
Buller Richard E
Role
null
Sold
9,000 shs ($1.26M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (right to buy) | 9,000 | $0.00 | -- |
| Exercise | Common Stock | 9,000 | $5.10 | $46K |
| Sale | Common Stock | 1,289 | $137.00 | $177K |
| Sale | Common Stock | 550 | $138.9955 | $76K |
| Sale | Common Stock | 1,670 | $139.5832 | $233K |
| Sale | Common Stock | 2,301 | $141.0271 | $325K |
| Sale | Common Stock | 2,825 | $142.0358 | $401K |
| Sale | Common Stock | 365 | $143.2378 | $52K |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Stock Option (right to buy) — 654 shares (Indirect, By Trust);
Common Stock — 15,760 shares (Indirect, By Trust);
Common Stock — 1,029 shares (Direct, null)
Footnotes (1)
- 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. The Reporting Person and his spouse are the trustees and beneficiaries. The Reporting Person continues to beneficially own these securities held by the trust. 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. 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. 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. 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. 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. 100% vested.
Key Figures
Shares sold: 9,000 shares
Sale prices: $137.00–$143.24 per share
Option exercise price: $5.10 per share
+3 more
6 metrics
Shares sold
9,000 shares
Open-market sales of Celcuity common stock
Sale prices
$137.00–$143.24 per share
Weighted average prices across multiple transactions
Option exercise price
$5.10 per share
Stock option exercise for 9,000 Celcuity shares
Indirect shares after trades
15,760 shares
Held through trust following transactions
Direct shares after trades
1,029 shares
Direct ownership following transactions
Remaining options
654 options at $5.10
Fully vested, expiring May 14, 2030
Key Terms
Rule 10b5-1 trading plan, weighted average price, Stock Option (right to buy), beneficially own, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Stock Option (right to buy) financial
"security_title": "Stock Option (right to buy)""
beneficially own financial
"The Reporting Person continues to beneficially own these securities held by the trust."
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
derivative security financial
"Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
FAQ
What insider transactions did Celcuity (CELC) director Richard E. Buller report?
Richard E. Buller exercised options for 9,000 Celcuity shares at $5.10 and sold 9,000 common shares in several open-market trades around $137–$143. The transactions were conducted indirectly through a trust associated with him.
What type of derivative security did Richard E. Buller exercise for Celcuity (CELC)?
He exercised a stock option to buy 9,000 Celcuity common shares at an exercise price of $5.10 per share. The related derivative entry shows 654 options remaining, fully vested, with an expiration date of May 14, 2030.