Equillium, Inc. filings document a clinical-stage biotechnology issuer focused on therapies for severe autoimmune and inflammatory disorders. The company’s disclosures cover EQ504, an investigational AhR modulator, along with operating results, financial condition, research and development priorities, and capital resources tied to biotechnology development.
Regulatory filings include 8-K material-event reports, proxy materials, and registration-related disclosures. These records address annual-meeting matters, board and compensation governance, equity awards, auditor changes, common-stock offering documents, material agreements, shareholder voting matters, and capital-structure information for EQ common stock listed on the Nasdaq Capital Market.
Equillium, Inc. granted its President and Chief Scientific Officer, Stephen Connelly, an employee stock option to buy 1,150,000 shares of common stock at an exercise price of $1.31 per share on 01/07/2026. The option has an expiration date of 01/06/2036 and was received at no cost, as reflected by a derivative security price of $0.
According to the vesting terms, 25% of the shares under the option vest on the first anniversary of the vesting commencement date, with the remaining shares vesting in 36 equal monthly installments over the following three years. After this grant, Connelly beneficially holds 1,150,000 stock options directly.
Equillium, Inc. reported that Sr. Vice President and COO Christine Zedelmayer received an employee stock option grant on 01/07/2026. The derivative award covers 500,000 stock options with an exercise price of $1.31 per share, allowing her to buy common stock at that price in the future. The grant was reported at a cost of $0 for the option itself and leaves her with 500,000 derivative securities beneficially owned directly after the transaction.
According to the vesting terms, 25% of the option vests on the first anniversary of the vesting commencement date, and the remaining options vest in 36 equal monthly installments over the following three years, resulting in a standard four-year vesting schedule tied to ongoing service.
Equillium, Inc. reported that its Chief Executive Officer, director and 10% owner, Bruce D. Steel, was granted an employee stock option on 01/07/2026. The option covers 1,750,000 shares of common stock at an exercise price of $1.31 per share and expires on 01/06/2036. According to the vesting terms, 25% of the shares vest on the first anniversary of the vesting commencement date, with the remaining shares vesting in 36 equal monthly installments over the following three years. After this grant, Steel beneficially holds 1,750,000 derivative securities directly.
Equillium, Inc. Principal Accounting Officer Tom Penny reported one stock sale and a new stock option grant. Penny sold 6,533 shares of common stock on January 8, 2026 at $1.29 per share, leaving him with no shares of common stock held directly after the sale. The filing notes these sales were made under a Rule 10b5-1 trading plan adopted on October 10, 2025, meaning they were pre‑scheduled rather than discretionary.
On January 7, 2026, Penny was granted an employee stock option to purchase 450,000 shares of Equillium common stock at an exercise price of $1.31 per share. The option vests over four years, with 25% vesting on the first anniversary of the vesting commencement date and the remaining shares vesting in 36 equal monthly installments over the following three years. After this grant, he holds 450,000 stock options directly.
An employee shareholder of EQ has filed a notice of proposed sale on Form 144 to sell 6,533 shares of common stock. The shares are to be sold through Maxim Group, with an aggregate market value of $8,427.00, on the NASDAQ, with an approximate sale date of 01/08/2026. These shares were acquired on 06/18/2024 under an Employee Stock Purchase Plan from the issuer and were paid for in cash on 12/12/2025. The company had 60,893,283 shares of common stock outstanding at the time referenced in the notice.
Equillium’s Senior Vice President and Chief Operating Officer reported open-market sales of company common stock. On December 12, 2025, the executive sold 23,804 shares of Equillium common stock at a price of $1.34 per share. On December 15, 2025, an additional 11,900 shares were sold at $1.31 per share.
Following these transactions, the reporting person beneficially owned 91,444 shares of Equillium common stock in direct ownership. The filing notes that the reported sales were effected under a Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025, which is a pre-arranged plan for trading company stock.
Equillium, Inc. (EQ) reported an insider stock sale by its Sr. Vice President and COO on a Form 4. On 11/25/2025, the officer sold 100 shares of common stock at $0.98 per share and another 7,998 shares at $0.95 per share. After these transactions, the officer beneficially owned 127,148 shares of Equillium common stock directly. The filing notes that the sale was carried out under a pre-arranged Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025, which is designed to allow insiders to sell shares according to a predetermined schedule.
Equillium, Inc. filed a shelf registration on Form S-3 to offer up to $250,000,000 of securities (common stock, preferred stock, debt, and warrants) from time to time, with terms to be set by prospectus supplements. The filing also includes a dedicated sales agreement prospectus for an at-the-market offering of up to $75,000,000 of common stock through LifeSci Capital, included within the $250,000,000 shelf.
Under the ATM, LifeSci Capital will act as sales agent on a commercially reasonable efforts basis, and will receive up to 3.0% of gross proceeds as compensation. Proceeds to the company will be used for general corporate purposes, including research and development, working capital, and capital expenditures, as later specified in supplements.
Equillium’s common stock trades on Nasdaq as “EQ,” and the last reported sale price was $0.924 per share on November 12, 2025. Shares outstanding were 60,676,837 as of September 30, 2025; this is a baseline figure, not the amount being offered.
Equillium, Inc. (EQ) reported a Q3 net loss of $4.23 million with $0 revenue, compared with $12.16 million in revenue a year ago tied to a now‑ended Ono arrangement. Operating expenses were $4.58 million versus $12.84 million last year, reflecting a smaller cost base post‑transition.
Cash and cash equivalents were $33.12 million and stockholders’ equity totaled $30.94 million. The company closed an August 2025 private placement for ~$30 million gross (common stock and pre‑funded warrants), and may raise up to an additional ~$20 million upon clinical and price‑based milestones. During Q3, it also sold shares via its ATM facility for ~$0.9 million gross. Shares outstanding were 60,676,837 at September 30, 2025, and 60,893,283 as of November 10, 2025.
The company terminated prior Biocon agreements and is focusing on EQ504, an aryl hydrocarbon receptor modulator, with an intended Phase 1 proof‑of‑mechanism study by mid‑2026. Management indicates existing cash is expected to fund operations through 2027.
Equillium, Inc. furnished an 8‑K announcing financial results for the third quarter ended September 30, 2025, via a press release attached as Exhibit 99.1. The company states the information under Item 2.02, including the exhibit, is furnished and not deemed filed under Section 18 of the Exchange Act, and it is not incorporated by reference into other SEC filings except as expressly specified by reference.