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KLRA · Kailera Therapeutics, Inc.
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TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475
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KLRA

Kailera Therapeutics, Inc.
PHARMA & BIOTECH · PHARMACEUTICAL PREPARATIONS · CIK 0002096997
CLUSTER · 5 INSIDERSACTIVIST 13D☆ WATCH
INSIDER NET · 180D
$326.8M
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
5
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
101
13F, latest reported quarter
REVENUE GROWTH
-
XBRL, annual
NET MARGIN
-
CONVERSIONS · 180D
10
codes C/M, not in net · $200.0K priced
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net +$326.8M over 180 days
+$326.8M of it by a 10%+ holder
the highest in Pharma & Biotech
CONGRESS
no member of Congress has reported trading it
FUNDS
101 funds added or opened last quarter
more than 65% of Pharma & Biotech
REVENUE
no revenue reported in any filing
MARGIN
no margin: this company reports no revenue to divide by
BUYBACKS
no share repurchases reported
SHORT
5.1% of shares outstanding short · 13.2 days to cover · settled 2026-07-31
more than 55% of Pharma & Biotech
THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET
5 insiders independently bought a net $326.8M — no planned sales are queued against it.
101 funds added or opened positions in the latest 13F quarter, of 101 holders.
BCLS Fund IV Investments, L.P. disclosed a 5%+ stake (17.43%) in the last six months.
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN -39.0%
-39.0%12M
-41%-27%-14%+0%2026-042026-052026-062026-062026-072026-08 2026-04-20 · BCPE Perseus Investor, LP bought $134.4M2026-04-20 · Kaplan Andrew T. bought $134.4M2026-04-20 · Koppel Adam bought $25.0M2026-04-20 · BCLS Fund IV Investments GP, LLC bought $25.0M2026-04-20 · RTW INVESTMENTS, LP bought $8.0M2026-04-23 · BCLS Fund IV Investments, L.P. filed a 5%+ stake (17.43%)2026-04-23 · BCPE Perseus Investor, LP filed a 5%+ stake (20.27%)
INSIDER BUY13D/G STAKE
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
5 insiders reported buying shares.
The record shows a net $326.8M bought by insiders over 180 days, 101 funds added last quarter. Every figure is a federal filing, dated the day it became public.
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, Kailera Therapeutics, Inc. insiders bought a net $326.8M of stock across 5 Form 4 purchases and sales, with 5 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-04.

INSIDER
FILED
SHARES
VALUE
RTW INVESTMENTS, LP
BUY
2026-04-20
500,000.0
$8.0M
BCPE Perseus Investor, LP
BUY
2026-04-20
8,398,438.0
$134.4M
Koppel Adam
Director
BUY
2026-04-20
1,562,500.0
$25.0M
BCLS Fund IV Investments GP, LLC
BUY
2026-04-20
1,562,500.0
$25.0M
Kaplan Andrew T.
Director
BUY
2026-04-20
8,398,438.0
$134.4M
5 TRANSACTIONS ON RECORD · THIN RECORD, READ IT AS SUCH

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Institutional holders
13F · holdings as of the latest quarter funds have reported
Bain Capital Investors LLC
26,255,581.0 sh
$578.4M
Bain Capital Life Sciences Investors, LLC
22,583,268.0 sh
$497.5M
RTW INVESTMENTS, LP
10,776,820.0 sh
$237.4M
CANADA PENSION PLAN INVESTMENT BOARD
7,304,688.0 sh
$160.9M
Atlas Venture Life Science Advisors, LLC
5,171,282.0 sh
$113.9M
5%+ owners
13D = intent to influence · 13G = passive
BCLS Fund IV Investments, L.P.
ACTIVIST 13D · 2026-04-23
17.43%
BCPE Perseus Investor, LP
ACTIVIST 13D · 2026-04-23
20.27%
FORM 144
No planned-sale notices
No insider has notified an intent to sell. This is the panel to watch after a run-up.
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
THE HARTFORD HEALTHCARE FUND
$4.7M POSITION · AS OF 2026-04-30
0.6%
Federated Hermes Kaufmann Small Cap Fund
$12.5M POSITION · AS OF 2026-04-30
0.4%
Franklin Biotechnology Discovery Fund
$3.7M POSITION · AS OF 2026-04-30
0.4%
VANGUARD HEALTH CARE FUND
$53.2M POSITION · AS OF 2026-04-30
0.1%
The Hartford Small Cap Growth Fund
$200.0K POSITION · AS OF 2026-04-30
0.1%
U.S. Small Cap Equity Fund
$270.9K POSITION · AS OF 2026-04-30
0.0%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

SEC FORM 4FORM 13F 13D/GFORM 144XBRL STOCK ACTCONTRACTSFEC CFPBNRC
© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-04 ALL SYSTEMS LIVE FOR MACHINES →