Here are the 424B prospectus supplements from Alector, Inc. (ALEC) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 424B covers the supplement that carries the terms of a priced offering, so if you follow ALEC and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full ALEC filings page.
Alector, Inc. (ALEC) is offering 36,600,000 shares of common stock at $2.05 per share, an aggregate offering price of $75,030,000. The underwriters will purchase the shares from Alector at $1.927 per share, representing $70,528,200 to the company before offering expenses; estimated net proceeds are approximately $70.2 million. Delivery is expected on or about October 19, 2026.
Alector intends to use net proceeds for general corporate purposes, including research, development and manufacturing of product candidates, working capital, capital expenditures, other corporate expenses, and acquisitions or strategic transactions. Pending use, it intends to invest the proceeds in short-term, investment-grade, interest-bearing instruments; management retains broad discretion over timing and application. Shares outstanding were 111,656,805 as of June 30, 2026. The prospectus estimates immediate dilution to new investors of $1.64 per share in net tangible book value.
Alector and its directors and executive officers agreed to restrictions on sales and other transfers of common stock during the 30-day restricted period, subject to underwriter consent and specified exceptions. The company also agreed not to sell shares under its separate sales agreement until that period expires or is waived.
Alector, Inc. is offering up to $125,000,000 of common stock through a sales agreement with TD Securities (USA) LLC ("TD Cowen") in an at‑the‑market offering under the company’s shelf registration. Sales may occur from time to time in negotiated transactions, block trades, or on Nasdaq, with TD Cowen acting as agent or principal and receiving up to 3.0% of gross proceeds. The offering assumes a reference price of $2.57 per share (last reported sale price on May 6, 2026), and the as‑adjusted net tangible book value would be $0.83 per share after giving effect to the full $125,000,000 issuance based on 111,025,187 shares outstanding as of March 31, 2026. Use of proceeds is for general corporate purposes, including R&D, manufacturing, working capital, capital expenditures, and potential strategic transactions. Sales under the agreement are at our discretion and may dilute existing and new investors; the sales agent is not required to sell any specific amount.