ALEC · Alector, Inc.

NASDAQ NMS - GLOBAL MARKET - BOATS Real Time Price • USD

Alector Inc (ALEC)

NASDAQ NMS - GLOBAL MARKET Biotechnology
Move probability → Options chain →
$1.87 -0.09 (-4.59%)
● At close: October 21 at 4:00:00 PM EDT
$1.85 -0.02 (-1.07%)
🌙 Overnight: 11:48:24 PM EDT
DAY'S RANGE $1.87
$1.85 $2.00
52-WEEK RANGE $1.87
$1.09 $3.27

What's happening

Deterministic template sentences filled in from the same sourced figures shown elsewhere on this page -- not an AI-written summary, no live model call.

Key Statistics

Market Cap$277.2M
P/E (TTM1)—
EPS2 (TTM)$-1.09
Div Yield—
Beta30.65
Volume80,611
Open1.94
Prev Close1.96
Bid / Ask1.60 / 0.00
Next Earnings 2026-11-10

Analyst Recommendations

Strong buy 3 Buy 5 Hold 3 Sell 2 Strong sell 0

Aggregate ratings for 2026-10-01 (13 analysts polled by Finnhub) — consensus count.

Performance Overview (Trailing returns vs S&P 500 benchmark)

YTD RETURN
ALEC +19.87%
vs S&P 500 +6.50%
1-YEAR RETURN
ALEC -41.74%
vs S&P 500 -56.91%
6-MONTH RETURN
ALEC -27.24%
3-MONTH RETURN
ALEC +22.22%

Valuation Measures & Ratios

Enterprise Value4$227.2M
Forward P/E5—
PEG Ratio6—
Price / Sales (TTM1)20.00
Price / Book722.85
EV4 / Revenue16.39
EV4 / EBITDA5.38
Profit Margin-850.13%
Operating Margin-912.40%
Return on Equity (ROE8)-295.17%
Return on Assets (ROA9)-44.00%
Avg Volume (3M)2,474,260
Quarterly history (5 periods)
Measure Jun '26Mar '26Sep '25Jun '25Mar '25
Market cap $220.0M $234.8M $37.8M $17.7M $15.3M
P/E -1.98 -1.83 -0.26 -0.12 -0.10
Price/Sales 14.20 14.81 1.25 0.42 0.31
Price/Book -22.07 22.61 0.65 0.25 0.16
EV/Revenue 10.97 10.48 -0.97 -0.42 -0.26
ROE 1114.45% -1238.61% -256.24% -213.40% -166.42%
ROA -54.77% -53.60% -44.11% -42.62% -38.56%

Trailing-twelve-month ratios computed from SEC EDGAR quarterly figures and historical daily close prices (Alpaca). Diluted shares are derived from Net income ÷ EPS (diluted) for each quarter, not separately reported. Forward P/E/PEG unavailable (no free data source).

Glossary — what these abbreviations mean
1. TTM
Trailing twelve months — the sum of the last four reported quarters, not a calendar year or the single latest quarter.
2. EPS
Earnings per share — net income divided by diluted shares outstanding.
3. Beta
A stock's historical volatility relative to the overall market. Above 1 means it has moved more than the market; below 1, less.
4. EV (Enterprise Value)
Market cap plus total debt minus cash — roughly what it would cost to buy the whole company, debt included.
5. Forward P/E
Price divided by analysts' estimated earnings for the next 12 months, instead of trailing actual earnings.
6. PEG Ratio
P/E divided by expected earnings growth rate. A lower number can indicate a stock is cheap relative to how fast it's expected to grow.
7. Price / Book
Share price divided by book value (assets minus liabilities) per share.
8. ROE
Return on equity — net income divided by shareholders' equity, a measure of how efficiently a company turns equity into profit.
9. ROA
Return on assets — net income divided by total assets, a measure of how efficiently a company turns assets into profit.
10. MRQ
Most recent quarter — the single latest reported period, as opposed to TTM. The Financials section's "Quarterly" view below shows MRQ-style figures.
11. YoY
Year over year — percent change versus the same period one year earlier, used for growth figures like those on Compare cards and the Screener.

Short Interest

Shares Short6,147,032
Change from Prior Settlement+0.69%
% of Float—
Days to Cover (Short Ratio)5.73

Source: FINRA Rule 4560 consolidated short interest, settlement date 2026-09-30. Reported bi-monthly with a reporting lag — not real-time.

Quotes and the 1-day extended-hours chart: Yahoo Finance. Longer historical charts: Alpaca (IEX feed) — real-time but IEX-only volume (~2.5% of consolidated market volume). Fundamentals + earnings: Finnhub.

Price history

Events

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Technical signal summary

Calculating from the latest year of daily price history…

Calculating…
Show Technical Analysis Breakdown ▾ 10 Indicators

Not investment advice — read several signals together.

Indicators None active

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Starter sets
Trend
Oscillators
Volume/volatility
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History limited by data provider; markers are heuristics, not signals.

Peer and sector context

No reviewed peer group is available for this symbol.

Balanced evidence

A deterministic summary of sourced facts—not an AI verdict.

Potential strengths

  • Latest SEC filing is Form 8-K, filed 2026-10-16; review it for current changes and risks. SEC EDGAR ↗

Potential concerns

Rule-based facts only; absence from either side is not evidence, and this is not a recommendation.

Financials

Income statement

Line item Jun '26Mar '26Sep '25Jun '25Mar '25Sep '24Jun '24Mar '24
Revenue $3.3M $1.0M $3.3M $7.9M $3.7M $15.3M $15.1M $15.9M
Operating income -$24.4M -$24.9M -$37.6M -$34.1M -$44.7M -$48.4M -$45.6M -$43.7M
Net income -$23.0M -$22.9M -$34.7M -$30.5M -$40.5M -$42.2M -$38.7M -$36.1M
EPS (diluted) $-0.21 $-0.21 $-0.34 $-0.30 $-0.41 $-0.43 $-0.40 $-0.38
EPS (basic) $-0.21 $-0.21 $-0.34 $-0.30 $-0.41 $-0.43 $-0.40 $-0.38
Operating margin -$735 -$2.4K -$1.2K -$434 -$1.2K -$316 -$302 -$275

Balance sheet

Line item Jun '26Mar '26Dec '25Sep '25Jun '25Mar '25Dec '24Sep '24
Total assets $202.9M $239.9M $293.2M $335.3M $356.4M $408.3M $468.3M $516.0M
Total liabilities $212.8M $229.5M $262.6M $277.6M $285.2M $313.7M $341.5M $397.1M
Stockholders' equity -$10.0M $10.4M $30.6M $57.7M $71.2M $94.6M $126.8M $118.9M
Total current assets $180.1M $215.1M $266.5M $300.4M $319.2M $366.6M $424.8M $469.4M
Total current liabilities $34.2M $41.0M $69.5M $80.0M $84.4M $109.8M $125.1M $142.5M
Cash & equivalents $59.9M $77.0M $65.8M $76.5M $44.8M $38.0M $33.0M $37.2M

Cash flow

Line item Jun '26Mar '26Dec '25Sep '25Jun '25Mar '25Dec '24Sep '24
Operating cash flow -$34.2M -$49.8M -$41.7M -$32.5M -$49.0M -$60.8M -$55.0M -$50.7M
Investing cash flow $17.1M $60.9M $25.6M $49.5M $55.7M $65.7M $41.4M $40.3M
Financing cash flow $50.0K $25.0K $5.4M $14.7M $122.0K $0 $9.8M $0
Free cash flow -$34.2M -$49.9M -$41.7M -$32.5M -$49.1M -$60.8M -$55.2M -$50.9M
Capital expenditures $31.0K $118.0K $0 $11.0K $10.0K $20.0K $173.0K $212.0K
Share-based compensation $2.6M $2.9M $4.8M $6.4M $7.1M $8.4M $10.2M $9.0M

Source: SEC EDGAR XBRL filings (10-Q/10-K), as originally tagged by the company. Quarterly cash flow is reconstructed by de-cumulating fiscal-year-to-date figures (how cash flow is tagged in 10-Qs); other quarterly lines are reported directly.

Institutional holders

SEC Form 13F filers holding ALEC as of the latest reported quarter. 13F only covers investment managers with $100M+ in assets — this is not a complete ownership picture, and does not include insiders (see Recent SEC filings below) or non-13F-eligible holders.

Institutional ownership is not available for this symbol right now.

Insider activity

Directors, officers, and 10%+ owners' reported transactions from SEC Form 4. A filing reports a transaction; it does not by itself explain why it happened.

Source: SEC EDGAR Form 4 filings · checked 25 most recent filings · covers 2026-03-02 to 2026-10-14

Recent transactions

  • Insiders have net sold 227,063 shares over the last 182 days, across 0 purchases and 9 sales.
  • Most recent: Rosenthal Arnon (Chief Executive Officer) — Grant / award of 217,500 shares on 2026-10-14.

Deterministic template sentences filled in from the SEC Form 4 figures in the tables below -- not an AI-written summary, no live model call.

Insider purchases & sales, last 6 months

Purchases (open market)0 sh(0 txns)
Sales (open market)227,063 sh(9 txns)
Net Shares-227,063

Counts only open-market purchases (code P) and sales (code S) — grants, option exercises, tax withholding, and gifts are excluded since they aren't a market buy/sell decision.

Insider roster

NameTitleMost Recent TransactionDateShares
Rosenthal ArnonChief Executive OfficerGrant / award2026-10-14217,500
Wong-Sarad GracePrincipal Accounting OfficerGrant / award2026-10-1455,555
Berkley Neil LindsayCFO & Chief Business OfficerGrant / award2026-10-1444,567
Yaffe KristineReporting personGrant / award2026-06-1728,700
SCHELLER RICHARD HReporting personGrant / award2026-06-1728,700
Hammond PaulaReporting personGrant / award2026-06-1728,700
GAROFALO ELIZABETH A.Reporting personGrant / award2026-06-1728,700
Altmeyer MarkReporting personGrant / award2026-06-1728,700
DESOUZA ERROL BReporting personGrant / award2026-06-1728,700
LAVIGNE LOUIS J JRReporting personGrant / award2026-06-1728,700

Recent transactions

DateInsiderTitleTransactionSharesPrice
2026-10-14Rosenthal ArnonChief Executive OfficerGrant / award 217,500$0.00
2026-10-14Wong-Sarad GracePrincipal Accounting OfficerGrant / award 55,555$0.00
2026-10-14Berkley Neil LindsayCFO & Chief Business OfficerGrant / award 44,567$0.00
2026-09-04Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 3,625$2.51
2026-09-03Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 5,165$2.67
2026-09-03Berkley Neil LindsayCFO & Chief Business OfficerOpen market sale 29,251$2.66
2026-09-03Rosenthal ArnonChief Executive OfficerOpen market sale 72,606$2.66
2026-09-02Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 656$2.75
2026-08-19Rosenthal ArnonChief Executive OfficerGift 1,050,000$0.00
2026-08-19Rosenthal ArnonChief Executive OfficerGift 350,000$0.00
2026-08-19Rosenthal ArnonChief Executive OfficerGift 350,000$0.00
2026-08-19Rosenthal ArnonChief Executive OfficerGift 350,000$0.00
2026-07-09Wong-Sarad GracePrincipal Accounting OfficerGrant / award 20,000$0.00
2026-06-17Yaffe KristineReporting personGrant / award 28,700$0.00
2026-06-17SCHELLER RICHARD HReporting personGrant / award 28,700$0.00
2026-06-17Hammond PaulaReporting personGrant / award 28,700$0.00
2026-06-17GAROFALO ELIZABETH A.Reporting personGrant / award 28,700$0.00
2026-06-17Altmeyer MarkReporting personGrant / award 28,700$0.00
2026-06-17DESOUZA ERROL BReporting personGrant / award 28,700$0.00
2026-06-17LAVIGNE LOUIS J JRReporting personGrant / award 28,700$0.00
2026-06-03Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 3,475$1.88
2026-06-02Rosenthal ArnonChief Executive OfficerOpen market sale 87,216$1.97
2026-06-02Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 5,709$1.97
2026-06-02Berkley Neil LindsayCFO & Chief Business OfficerOpen market sale 19,360$1.97
2026-06-01SCHELLER RICHARD HReporting personGrant / award 10,833$0.00
2026-04-16Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 1,820$2.65
2026-03-15Berkley Neil LindsayCFO & Chief Business OfficerGrant / award 54,600$0.00
2026-03-13Rosenthal ArnonChief Executive OfficerGrant / award 116,246$0.00
2026-03-10Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 1,000$2.65
2026-03-03Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 3,367$2.08
2026-03-02Wong-Sarad GracePrincipal Accounting OfficerOpen market sale 8,071$2.12

Recent SEC filings

Official company reports and insider transaction filings. Form 4 reports a transaction; it does not by itself explain why it happened.

Source: SEC EDGAR submissions · updated 2026-10-22 05:54 UTC

FiledFormReport periodOfficial filing
2026-10-168-K2026-10-15 View on SEC.gov →
2026-10-1542026-10-13 View on SEC.gov →
2026-10-1542026-10-13 View on SEC.gov →
2026-10-1542026-10-14 View on SEC.gov →
2026-10-148-K2026-10-13 View on SEC.gov →
2026-10-058-K2026-09-30 View on SEC.gov →
2026-09-0442026-09-02 View on SEC.gov →
2026-09-0442026-09-03 View on SEC.gov →
2026-09-0442026-09-03 View on SEC.gov →
2026-08-2142026-08-19 View on SEC.gov →
2026-08-0610-Q2026-06-30 View on SEC.gov →
2026-08-068-K2026-08-06 View on SEC.gov →

Headlines about ALEC (Alector, Inc.). Links open the publisher — we don’t host full articles.

SEC filings ↓

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