Equillium COO sells 95,833 shares in plan trade
Equillium, Inc. senior vice president and COO Christine Zedelmayer reported a set of option exercises paired with open-market sales of common stock.
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Form Type
4
Rhea-AI Filing Summary
Equillium, Inc. senior vice president and COO Christine Zedelmayer reported a set of option exercises paired with open-market sales of common stock. She exercised employee stock options to acquire 95,833 shares at strike prices between $0.73 and $0.785 per share, then sold 95,833 shares at market prices around the high $2 range. After these transactions, she directly holds 62,586 shares of Equillium common stock. A footnote states that at least part of the sales were made under a pre-arranged Rule 10b5-1 trading plan, indicating they were scheduled in advance.
Insider Trade Summary 10b5-1
Exercise and Sale: 95,833 shares ($193K approx. pre-tax spread)
Exercise and Sale
14 txns
Insider
Zedelmayer Christine
Role
Sr. Vice President and COO
Sold
95,833 shs ($267K)
Approx. gross sale proceeds
$267K
Approx. exercise cost
$74K
Approx. pre-tax spread
$193K
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Employee Stock Option (right to buy) | 7,292 | $0.00 | $0.00 |
| Exercise | Employee Stock Option (right to buy) | 48,512 | $0.00 | $0.00 |
| Exercise | Employee Stock Option (right to buy) | 14,583 | $0.00 | $0.00 |
| Exercise | Employee Stock Option (right to buy) | 15,625 | $0.00 | $0.00 |
| Exercise | Common Stock | 7,292 | $0.73 | $5K |
| Exercise | Common Stock | 48,512 | $0.77 | $37K |
| Sale | Common Stock | 55,604 | $2.70 | $150K |
| Sale | Common Stock | 200 | $2.71 | $542.00 |
| Exercise | Common Stock | 14,583 | $0.785 | $11K |
| Exercise | Common Stock | 15,625 | $0.785 | $12K |
| Sale | Common Stock | 30,208 | $2.98 | $90K |
| Exercise | Employee Stock Option (right to buy) | 9,821 | $0.00 | $0.00 |
| Exercise | Common Stock | 9,821 | $0.77 | $8K |
| Sale | Common Stock | 9,821 | $2.70 | $27K |
Holdings After Transaction:
Employee Stock Option (right to buy) — 247,918 contracts (Direct);
Common Stock — 62,586 shares (Direct)
Footnotes (3)
- F1. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025.
- F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.97 to $3.04, 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 sold at each separate price within the range.
- F3. Twenty-five percent of the shares subject to the option vests on the first anniversary of the vesting commencement date, and the remainder vests in 36 equal monthly installments thereafter for the following three years.
Key Figures
Shares sold: 95,833 shares
Shares exercised: 95,833 shares
Post-transaction holdings: 62,586 shares
+5 more
8 metrics
Shares sold
95,833 shares
Total open-market sales reported across Form 4
Shares exercised
95,833 shares
Total shares acquired via option exercises
Post-transaction holdings
62,586 shares
Common stock directly held after latest trades
Sale price example
<money>$2.70</money> per share
One of the reported transaction prices for common stock sales
Weighted average price range
<money>$2.97–$3.04</money>
Range for sales underlying a weighted average price disclosure
Option strike price
<money>$0.785</money> per share
Exercise price for certain employee stock options
Option strike price
<money>$0.770</money> per share
Exercise price for another option grant
Option strike price
<money>$0.730</money> per share
Exercise price for additional options exercised
Key Terms
Rule 10b5-1 trading plan, weighted average price, Employee Stock Option (right to buy), derivative security, +1 more
5 terms
Rule 10b5-1 trading plan financial
"The sale reported in this Form 4 was 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. These shares were sold in multiple transactions"
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.
Employee Stock Option (right to buy) financial
"Employee Stock Option (right to buy) ... underlying security title Common Stock ... exercise or conversion of derivative security"
derivative security financial
"transaction_code_description 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.
open-market sale financial
"transaction_action open-market sale ... transaction_code_description Sale in open market or private transaction"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Equillium (EQ) executive Christine Zedelmayer report in this Form 4?
Christine Zedelmayer reported exercising employee stock options and selling Equillium common shares. She exercised 95,833 shares via options and sold 95,833 shares in open-market transactions over two days, while retaining a remaining direct stake in the company.
Were Christine Zedelmayer’s Equillium (EQ) stock sales pre-planned under a Rule 10b5-1 plan?
Yes. A footnote states the reported sale was effected under a Rule 10b5-1 trading plan. The plan was adopted on August 27, 2025, indicating the trades were scheduled in advance rather than made on an ad hoc basis.
What option exercises did Christine Zedelmayer report for Equillium (EQ)?
She exercised employee stock options covering 95,833 underlying shares of Equillium common stock. These options had exercise prices of $0.73, $0.77, and $0.785 per share, converting derivative awards into directly held shares before subsequent sales.
AI-generated analysis. How Rhea-AI works. Not financial advice.
