Tang Capital Management LLC Insider Trades

Entity

10% owner at Fulcrum Therapeutics, Inc. and 1 other company. 3 significant open-market trades reported on SEC Form 4 in the last 180 days.

$1.6M

Bought

$0

Sold

3 / 0

Buys / Sells

2

Companies

Companies

  • FULC10% owner

    Fulcrum Therapeutics, Inc.

    2 buys, $1.5M · 1 graded alert

  • BOLD10% owner

    Boundless Bio, Inc.

    1 buy, $156K

Reported Trades

Open-market transactions only (code P and S), outside any 10b5-1 plan, dated by the day the filing reached EDGAR. Each row links to the filing.

FiledCompanyTradeValue
Jul 20, 2026FULC10% ownerbuy$595K
Jul 16, 2026BOLD10% ownerbuy$156K
Jul 15, 2026FULC10% ownerbuy$891K

Other Insiders at These Companies

Everyone else who reported a significant open-market trade at the same companies in the last 180 days. Several buyers inside one week is cluster buying.

  • Kevin Tang10% owner at FULC2 buys, $1.5M

How to Read This Page

These are the trades an insider chose to make with their own money, not grants, option exercises or tax withholding. A purchase is the stronger signal (why buys carry more information than sales), and an insider who buys is locked out of selling for six months by the short-swing rule. Several insiders buying at the same company in the same week is cluster buying, the pattern the research literature rates highest. The window here is 180 days; the full filing history lives on EDGAR.

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Tang Capital Management LLC Insider Trades - InsiderWatch