Log inTry free

Severin Hacker stock trades

Chief Tech Officer, Co-Founder of Duolingo

3 open-market trades reported in the last 12 months: 3 sales for $7.5M. Every sale was under a trading plan set up in advance. The newest was filed Nov 20, 2025.

Where Severin Hacker files

Each title as their newest Form 4 there gives it, and the open-market trades there in the last 12 months. Open any stock for its score. Pro members see every stock ranked.

CompanyTradesQuality Score
DUOLDuolingoChief Tech Officer, Co-Founder38

Severin Hacker's trades, as filed

Open-market buys and sales, newest first, each with its Form 4 on the SEC's site. A Plan tag marks a sale under a trading plan set up in advance.

StockTradeTraded
DUOLDuolingoSellPlan$1.7Mat $172.74Nov 19, 2025filed Nov 20, 2025SEC filing
DUOLDuolingoSellPlan$2.6Mat $263.13Nov 4, 2025filed Nov 6, 2025SEC filing
DUOLDuolingoSellPlan$3.1Mat $314.72Oct 20, 2025filed Oct 22, 2025SEC filing

5 other filings on record (conversions and gift). Pro members see every trade, the shares Severin Hacker held after each, and every filing.

Get in free →
Get an alert when Severin Hacker buys or sells

See it live, free until tomorrow morning. No account. No card. Then keep going with a free account.

Alerts are optional, and off until you set one. One alert for each Form 4 Severin Hacker files.

An officer or a director has two business days to report a trade on a Form 4, so a trade is public within days. We read the SEC's new filings every 3 hours. Quality Scores as of 4:56 AM ET, delayed at least 15 minutes.

We do the work for you. Every stock is scored and ranked, every 15 seconds while the market is open. Here it's 15 minutes behind. Pro members see it live.

Here is what Pro members see.

  • Every insider trade, sorted

    Buys and sales by officers and directors on every stock. Sort, filter, download a CSV, and set optional alerts.

  • Their trades on the chart

    Insider buys and sales marked on the stock's chart, from a year to the full history.

  • Why a stock ranks

    Its Quality Score, its rank, and the reasons behind it, on one card.

  • Congress trades

    Each member's trades. Sort, filter, download a CSV, and set optional alerts.

  • The score, added up

    Price action, the company, and signals, each with its points, summed into one number on every stock's page.

  • All 14 chart checks

    Trend, volume, tight range, and buying, each lit when it fires, its rule a tap away.

  • Earnings, week by week

    Who reports each day, and how each stock took its last four reports. Optional alerts before them.

  • FDA dates, counted down

    Each date in the company's own words, its cash against the date, and an optional alert before it.

  • The market map

    Every stock a box, colored by its Quality Score.

  • Themes, ranked live

    AI chips, quantum, nuclear, defense, space, and more, each stock ranked by its Quality Score.

  • The top 10, every day

    The ten highest Quality Scores at each close, kept day by day, week by week.

  • Optional alerts, your way

    Pick a stock, a score, a price, a filing, or a whole scan. It tells you by push, email, or the bell.

  • Your watchlist, scored

    Your stocks by Quality Score, today's move, or name, with optional alerts.

  • A trade plan, from the chart

    Entry, stop, and two targets on every stock's page. Type your risk and it sizes the trade.

  • On your phone and your laptop

    The same account and watchlist on both, each laid out for its screen.

  • Prices refresh every 2.5 seconds during market hours.
  • Optional alerts by push, email, or the bell.
  • Add it to your Home Screen and it opens like an app.

Others who file at Duolingo

Insider trades by person

Trades are shown as filed with the SEC on Form 4. Quality Scores on this page are delayed at least 15 minutes.