KLRA · Insider trading · 13F holders · Congress trades
Kailera Therapeutics Inc (KLRA)
Who is buying and selling KLRA: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 13
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
KLRA at a glance
- No open-market insider purchases or sales of KLRA were filed in the last 90 days.
- 13 13F filers hold KLRA among their 50 largest positions, worth $1.6B combined. The biggest bets by portfolio weight are Bain Capital Life Sciences Investors, LLC (29.6%), Trails Edge Capital Partners, LP (3.4%) and Rtw Investments, LP (2.0%). In their latest 13Fs, 10 managers opened a new position and 0 added to one.
- No member of Congress has disclosed a trade in KLRA.
KLRA insider trading
No open-market insider purchases or sales of KLRA were filed in the last 90 days.
Who owns KLRA? Hedge funds and superinvestors
13 13F filers hold KLRA among their 50 largest positions, worth $1.6B combined. The biggest bets by portfolio weight are Bain Capital Life Sciences Investors, LLC (29.6%), Trails Edge Capital Partners, LP (3.4%) and Rtw Investments, LP (2.0%). In their latest 13Fs, 10 managers opened a new position and 0 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Bain Capital Investors LLCAsset manager | 12.0% | $578.4M | 26,255,581 | New | Q2 2026 |
| Bain Capital Life Sciences Investors, LLCAsset manager | 29.6% | $497.5M | 22,583,268 | New | Q2 2026 |
| Rtw Investments, LPHedge fund | 2.0% | $237.4M | 10,776,820 | — | Q2 2026 |
| Atlas Venture Life Science Advisors, LLCVenture capital | 12.9% | $113.9M | 5,171,282 | New | Q2 2026 |
| Siren, L.L.C.Investment manager | 1.0% | $48.8M | 2,214,286 | — | Q2 2026 |
| Frazier Life Sciences Management, L.P.Hedge fund | 0.5% | $24.2M | 1,100,000 | New | Q2 2026 |
| Farallon Capital Management, L.l.c.Hedge fund | 0.1% | $24.2M | 1,100,000 | — | Q2 2026 |
| Trails Edge Capital Partners, LPHedge fund | 3.4% | $21.7M | 984,786 | New | Q2 2026 |
| Cormorant Asset Management, LPHedge fund | 0.6% | $12.1M | 550,000 | New | Q2 2026 |
| Catalio Capital Management, LPHedge fund | 1.9% | $10.3M | 468,750 | New | Q2 2026 |
| a16z Capital Management, L.L.C.Hedge fund | 0.0% | $3.1M | 140,000 | New | Q2 2026 |
| Avidity Partners Management LPHedge fund | 0.3% | $1.8M | 80,000 | New | Q2 2026 |
| Foresite Capital Management VI LLCHedge fund | 0.1% | $826K | 37,500 | New | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 13). Screen KLRA in the grand portfolio →
KLRA stock trades by members of Congress
No member of Congress has disclosed a trade in KLRA.
KLRA questions and answers
Are insiders buying KLRA stock?
No open-market insider purchases or sales of KLRA were filed in the last 90 days.
Which hedge funds own KLRA?
13 13F filers hold KLRA among their 50 largest positions, worth $1.6B combined. The biggest bets by portfolio weight are Bain Capital Life Sciences Investors, LLC (29.6%), Trails Edge Capital Partners, LP (3.4%) and Rtw Investments, LP (2.0%). In their latest 13Fs, 10 managers opened a new position and 0 added to one.
Has Congress traded KLRA?
No member of Congress has disclosed a trade in KLRA.
Who is the largest holder of KLRA?
Among 13F filers, Bain Capital Investors LLC reports the largest KLRA position, $578.4M (26,255,581 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Bain Capital Life Sciences Investors, LLC's: 29.6% of its portfolio.
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