Equillium COO exercises options and sells shares
Equillium, Inc. senior vice president and COO Christine Zedelmayer reported an exercise-and-sale transaction in company stock.
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Form Type
4
Rhea-AI Filing Summary
Equillium, Inc. senior vice president and COO Christine Zedelmayer reported an exercise-and-sale transaction in company stock. She exercised employee stock options to acquire 14,584 shares of common stock at an exercise price of $0.7850 per share, then sold 14,584 shares in an open-market transaction at a weighted average price of $2.9304 per share.
The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 27, 2025, indicating it was scheduled in advance. After these transactions, she holds 62,586 shares of common stock directly and 25,521 stock options that remain outstanding and unexercised.
Insider Trade Summary 10b5-1
Exercise and Sale: 14,584 shares ($31K approx. pre-tax spread)
Exercise and Sale
3 txns
Insider
Zedelmayer Christine
Role
Sr. Vice President and COO
Sold
14,584 shs ($43K)
Approx. gross sale proceeds
$43K
Approx. exercise cost
$11K
Approx. pre-tax spread
$31K
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Employee Stock Option (right to buy) | 14,584 | $0.00 | $0.00 |
| Exercise | Common Stock | 14,584 | $0.785 | $11K |
| Sale | Common Stock | 14,584 | $2.9304 | $43K |
Holdings After Transaction:
Employee Stock Option (right to buy) — 25,521 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 $2.91 to $2.95, 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: 14,584 shares
Weighted average sale price: $2.9304 per share
Shares acquired via option exercise: 14,584 shares
+4 more
7 metrics
Shares sold
14,584 shares
Open-market sale of common stock
Weighted average sale price
$2.9304 per share
Common stock sale range $2.91–$2.95
Shares acquired via option exercise
14,584 shares
Common stock from employee stock option exercise
Option exercise price
$0.7850 per share
Employee stock option exercise price
Common shares held after transactions
62,586 shares
Direct ownership following exercise and sale
Options remaining after exercise
25,521 options
Employee stock options still outstanding
Option expiration date
2033-01-02
Employee stock option grant expiration
Key Terms
Rule 10b5-1 trading plan, weighted average price, Employee Stock Option (right to buy), vests in 36 equal monthly installments
4 terms
Rule 10b5-1 trading plan regulatory
"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."
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.
Employee Stock Option (right to buy) financial
"Employee Stock Option (right to buy)"
vests in 36 equal monthly installments financial
"and the remainder vests in 36 equal monthly installments thereafter for the following three years."
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Equillium (EQ) COO Christine Zedelmayer do in this Form 4 filing?
Christine Zedelmayer exercised employee stock options and then sold the same number of Equillium shares. She acquired 14,584 shares at an exercise price of $0.7850 and sold 14,584 shares in the open market at a weighted average price of $2.9304.
At what price did the Equillium (EQ) COO exercise her stock options?
She exercised employee stock options covering 14,584 shares at an exercise price of $0.7850 per share. These options related to Equillium common stock and were part of a standard employee stock option grant with time-based vesting conditions.
Was the Equillium (EQ) COO’s stock sale part of a Rule 10b5-1 trading plan?
Yes, the sale was executed under a Rule 10b5-1 trading plan. A footnote states the plan was adopted on August 27, 2025, indicating the transactions were pre-scheduled rather than discretionary, which is common for routine insider equity sales.
What is the remaining option position for the Equillium (EQ) COO after this Form 4?
After exercising 14,584 options, she has 25,521 employee stock options remaining outstanding. The option grant carries a vesting schedule where 25% vests after one year, with the balance vesting in 36 equal monthly installments over the following three years.
AI-generated analysis. How Rhea-AI works. Not financial advice.
