Vault-13

KAILERA THERAPEUTICS INC KLRA

COMMON STOCK · Common Stock · CUSIP 482931102

99 institutional holders
116,154,321116.2m shares reported held*
89.6% of all shares outstanding*
$2.6bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 129.6m as of 2026-08-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $22.03.

Biggest buyers

Bain Capital Investors LLC New +26,255,581+26.3m
Bain Capital Life Sciences Investors, LLC New +22,583,268+22.6m
RTW INVESTMENTS, LP New +10,776,820+10.8m
CANADA PENSION PLAN INVESTMENT BOARD New +7,304,688+7.3m
Atlas Venture Life Science Advisors, LLC New +5,171,282+5.2m
FMR LLC New +3,970,865+4.0m
BlackRock, Inc. New +3,928,604+3.9m
PRICE T ROWE ASSOCIATES INC /MD/ New +3,534,410+3.5m
CITADEL ADVISORS LLC New +3,240,787+3.2m
ADAGE CAPITAL PARTNERS GP, L.L.C. New +3,208,286+3.2m

Biggest sellers

None

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BCPE Perseus Investor, LP 13D · may seek influence new · filed 2026-04-23
Stated purposeThe information set forth in Item 3 of this Schedule 13D is incorporated by reference in its entirety into this Item 4. Andrew Kaplan, a Partner of BCI, is a member of the Issuer's board of directors (the "Board"). The Reporting Person acquired the securities reported herein for investment purposes. In its capacity as a significant stockholder of the Issuer, the Reporting Person intends to take an active role in working with the Issuer's management and the Board on operational, financial and strategic initiatives. The Reporting Person reviews and intends to continue to review, on an ongoing and continuing basis, their investment in the Issuer. Depending upon the factors discussed below and subject to applicable law, the Reporting Person may from time to time acquire additional securities… Full filing
20.3% new 26.3m≈ $578.4m 2026-04-23
BCLS Fund IV Investments, L.P. 13D · may seek influence new · filed 2026-04-23
Stated purposeThe information set forth in Item 3 of this Schedule 13D is incorporated by reference in its entirety into this Item 4. Adam Koppel, a Partner of BCLSI, is a member of the Issuer's board of directors (the "Board"). The Reporting Person acquired the securities reported herein for investment purposes. In its capacity as a significant stockholder of the Issuer, the Reporting Person intends to take an active role in working with the Issuer's management and the Board on operational, financial and strategic initiatives. The Reporting Person reviews and intends to continue to review, on an ongoing and continuing basis, their investment in the Issuer. Depending upon the factors discussed below and subject to applicable law, the Reporting Person may from time to time acquire additional securities… Full filing
17.4% new 22.6m≈ $497.5m 2026-04-23
Jiangsu Hengrui Pharmaceuticals Co., Ltd. 13G · exempt (held before listing) new · filed 2026-08-05 8.9% new 11.5m≈ $253.6m 2026-08-05
RTW INVESTMENTS, LP 13G · institution new · filed 2026-08-14 8.3% new 10.8m≈ $237.4m 2026-08-14
CANADA PENSION PLAN INVESTMENT BOARD 13G · exempt (held before listing) new · filed 2026-08-14 5.6% new 7.3m≈ $160.9m 2026-08-14

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
202Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 2 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20262$159.4m0——
Q3 20260—0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-04-20 Kaplan Andrew T. Director · See footnotes Bought 8,398,438 $16.00 $134.4m8.4m shares +47%
2026-04-20 BAIN CAPITAL INVESTORS LLC +4 10% owner · See footnotes Bought 8,398,438 $16.00 $134.4m8.4m shares +47%
2026-04-20 Bain Capital Life Sciences Investors, LLC +4 10% owner · See footnotes Bought 1,562,500 $16.00 $25.0m1.6m shares +7%
2026-04-20 Koppel Adam Director · See footnotes Bought 1,562,500 $16.00 $25.0m1.6m shares +7%
2026-04-20 RTW INVESTMENTS, LP +1 10% owner · See footnote Bought 500,000 $16.00 $8.0m500.0k shares +5%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Bain Capital Investors LLC 12.01% of their portfolio Boston, MA 26,255,58126.3m $578.4m $578.4m 12.01% New
2 Bain Capital Life Sciences Investors, LLC 29.58% of their portfolio Boston, MA 22,583,26822.6m $497.5m $497.5m 29.58% New
3 RTW INVESTMENTS, LP 2.03% of their portfolio NEW YORK, NY 10,776,82010.8m $237.4m $237.4m 2.03% New
4 CANADA PENSION PLAN INVESTMENT BOARD 0.09% of their portfolio TORONTO ONTARIO, A6 7,304,6887.3m $160.9m $160.9m 0.09% New
5 Atlas Venture Life Science Advisors, LLC 12.93% of their portfolio CAMBRIDGE, MA 5,171,2825.2m $113.9m $113.9m 12.93% New
6 FMR LLC 0.00% of their portfolio BOSTON, MA 3,970,8654.0m $87.5m $87.5m 0.00% New
7 BlackRock, Inc. 0.00% of their portfolio New York, NY 3,928,6043.9m $86.5m $86.5m 0.00% New
8 PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio BALTIMORE, MD 3,534,4103.5m $77.9m $77.9m 0.01% New
9 CITADEL ADVISORS LLC 0.04% of their portfolio MIAMI, FL 3,240,7873.2m $71.4m $71.4m 0.04% New
10 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.10% of their portfolio Boston, MA 3,208,2863.2m $70.7m $70.7m 0.10% New
11 WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio Boston, MA 2,919,1102.9m $64.3m $64.3m 0.01% New
12 Royalty Pharma Sub-Manager, LLC 22.36% of their portfolio New York, NY 2,455,3572.5m $54.1m $54.1m 22.36% New
13 Siren, L.L.C. 0.99% of their portfolio New York, NY 2,214,2862.2m $48.8m $48.8m 0.99% New
14 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 1,693,9581.7m $37.3m $37.3m 0.00% New
15 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 1,652,5071.7m $36.4m $36.4m 0.00% New
16 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,133,1151.1m $25.0m $25.0m 0.00% New
17 FARALLON CAPITAL MANAGEMENT, L.L.C. 0.14% of their portfolio SAN FRANCISCO, CA 1,100,0001.1m $24.2m $24.2m 0.14% Not comparable
18 Frazier Life Sciences Management, L.P. 0.53% of their portfolio PALO ALTO, CA 1,100,0001.1m $24.2m $24.2m 0.53% New
19 Trails Edge Capital Partners, LP 3.44% of their portfolio ATLANTA, GA 984,786984.8k $21.7m $21.7m 3.44% New
20 UBS Group AG 0.00% of their portfolio ZURICH, V8 972,683972.7k $21.4m $21.4m 0.00% New
21 Jupiter Topco LLC 0.01% of their portfolio NEW YORK, NY 970,857970.9k $21.3m $21.3m 0.01% First filing
22 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 821,331821.3k $18.1m $18.1m 0.00% New
23 Deep Track Capital, LP 0.23% of their portfolio GREENWICH, CT 700,000700.0k $15.4m $15.4m 0.23% New
24 EVENTIDE ASSET MANAGEMENT, LLC 0.18% of their portfolio Boston, MA 616,720616.7k $13.6m $13.6m 0.18% New
25 Vestal Point Capital, LP 0.30% of their portfolio NEW YORK, NY 575,000575.0k $12.7m $12.7m 0.30% New
26 Cormorant Asset Management, LP 0.62% of their portfolio BOSTON, MA 550,000550.0k $12.1m $12.1m 0.62% New
27 Catalio Capital Management, LP 1.94% of their portfolio NEW YORK, NY 468,750468.8k $10.3m $10.3m 1.94% New
28 FEDERATED HERMES, INC. 0.01% of their portfolio PITTSBURGH, PA 434,069434.1k $9.6m $9.6m 0.01% New
29 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 421,034421.0k $9.3m $9.3m 0.00% New
30 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 400,023400.0k $8.8m $8.8m 0.00% New
31 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 362,910362.9k $8.0m $8.0m 0.00% New
32 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 354,431354.4k $7.8m $7.8m 0.00% New
33 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 290,128290.1k $6.4m $6.4m 0.00% New
34 Nantahala Capital Management, LLC 0.19% of their portfolio NEW CANAAN, CT 280,000280.0k $6.2m $6.2m 0.19% New
35 SEVEN GRAND MANAGERS, LLC 0.16% of their portfolio BRONXVILLE, NY 175,000175.0k $3.9m $3.9m 0.16% New
36 Balyasny Asset Management L.P. 0.01% of their portfolio Chicago, IL 154,838154.8k $3.4m $3.4m 0.01% New
37 EXCHANGE TRADED CONCEPTS, LLC 0.02% of their portfolio Oklahoma City, OK 152,501152.5k $3.4m $3.4m 0.02% New
38 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 149,817149.8k $3.3m $3.3m 0.00% New
39 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 147,698147.7k $3.3m $3.3m 0.00% New
40 a16z Capital Management, L.L.C. 0.02% of their portfolio MENLO PARK, CA 140,000140.0k $3.1m $3.1m 0.02% New
41 Aberdeen Group plc 0.00% of their portfolio EDINBURGH, X0 140,000140.0k $3.1m $3.1m 0.00% New
42 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 138,399138.4k $3.0m $3.0m 0.00% New
43 ALPS ADVISORS INC 0.01% of their portfolio Denver, CO 131,000131.0k $2.9m $2.9m 0.01% New
44 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 88,79688.8k $2.0m $2.0m 0.00% New
45 Avidity Partners Management LP 0.28% of their portfolio DALLAS, TX 80,00080.0k $1.8m $1.8m 0.28% New
46 Ghisallo Capital Management LLC 0.03% of their portfolio BOSTON, MA 75,00075.0k $1.7m $1.7m 0.03% New
47 Rock Springs Capital Management LP 0.07% of their portfolio Baltimore, MD 65,00065.0k $1.4m $1.4m 0.07% New
48 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 61,09061.1k $1.3m $1.3m 0.00% New
49 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 58,38758.4k $1.3m $1.3m 0.00% New
50 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 57,78657.8k $1.3m $1.3m 0.00% New
51 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 56,51056.5k $1.2m $1.2m 0.00% New
52 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 53,31753.3k $1.2m $1.2m 0.00% New
53 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 49,22449.2k $1.1m $1.1m 0.01% New
54 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 48,39148.4k $1.1m $1.1m 0.00% New
55 TUDOR INVESTMENT CORP ET AL 0.00% of their portfolio STAMFORD, CT 48,05048.0k $1.1m $1.1m 0.00% New
56 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 45,64845.6k $1.0m $1.0m 0.00% New
57 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 45,06245.1k $992.7k $992.7k 0.00% New
58 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 43,12043.1k $949.9k $949.9k 0.00% New
59 Foresite Capital Management VI LLC 0.13% of their portfolio WEST HOLLYWOOD, CA 37,50037.5k $826.1k $826.1k 0.13% New
60 CIBC WORLD MARKET INC. 0.00% of their portfolio TORONTO, A6 35,47635.5k $781.5k $781.5k 0.00% New
61 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 32,60932.6k $718.4k $718.4k 0.00% New
62 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 31,30831.3k $723.9k $723.9k 0.00% New
63 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 28,38928.4k $625.4k $625.4k 0.00% New
64 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 27,32627.3k $602.0k $602.0k 0.00% New
65 Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio FRANKFURT AM MAIN, 2M 22,95123.0k $505.6k $505.6k 0.00% New
66 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 21,54721.5k $474.7k $474.7k 0.00% New
67 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 21,17121.2k $466.4k $466.4k 0.00% New
68 SOROS FUND MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 20,00020.0k $440.6k $440.6k 0.01% New
69 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 19,20019.2k $423.0k $423.0k 0.00% New
70 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 17,50017.5k $385.5k $385.5k 0.00% New
71 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 17,42817.4k $383.9k $383.9k 0.00% New
72 Harbour Capital Advisors, LLC 0.06% of their portfolio TYSONS CORNER, VA 16,57016.6k $342.7k $342.7k 0.06% New
73 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 16,20016.2k $356.9k $356.9k 0.00% New
74 Tidal Investments LLC 0.00% of their portfolio Milwaukee, WI 14,03914.0k $309.3k $309.3k 0.00% New
75 Tema ETFs LLC 0.01% of their portfolio New York, NY 14,03914.0k $309.3k $309.3k 0.01% First filing
76 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 13,61813.6k $300.0k $300.0k 0.00% New
77 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 10,33110.3k $227.6k $227.6k 0.00% New
78 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 10,30610.3k $227.0k $227.0k 0.00% New
79 Hudson Bay Capital Management LP 0.00% of their portfolio STAMFORD, CT 10,05010.1k $221.4k $221.4k 0.00% New
80 GABELLI FUNDS LLC 0.00% of their portfolio Rye, NY 10,00010.0k $220.3k $220.3k 0.00% New
81 Legal & General Group Plc 0.00% of their portfolio London, X0 9,0489.0k $199.2k $199.2k 0.00% New
82 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 9,0009.0k $198.3k $198.3k 0.00% New
83 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 7,0007.0k $154.2k $154.2k 0.00% New
84 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 5,0135.0k $110.4k $110.4k 0.00% New
85 Penserra Capital Management LLC 0.00% of their portfolio ORINDA, CA 4,8644.9k $107.0k $107.0k 0.00% New
86 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 4,1904.2k $92.3k $92.3k 0.00% New
87 DIADEMA PARTNERS LP 0.03% of their portfolio MORRISTOWN, NJ 3,6213.6k $79.8k $79.8k 0.03% New
88 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,2893.3k $72.5k $72.5k 0.00% New
89 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 2,9242.9k $65.0k $65.0k 0.00% New
90 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 2,6422.6k $58.2k $58.2k 0.00% New
91 Persistent Asset Partners Ltd 0.01% of their portfolio HONG KONG, K3 1,7651.8k $38.9k $38.9k 0.01% New
92 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 1,1501.1k $25.3k $25.3k 0.00% New
93 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 871871 $19.2k $19.2k 0.00% New
94 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 636636 $14.0k $14.0k 0.00% New
95 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 402402 $8.9k $8.9k 0.00% New
96 Fortitude Family Office, LLC 0.00% of their portfolio SCOTTSDALE, AZ 3232 $705 $705 0.00% New
97 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 2020 $441 $441 0.00% New
98 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 1515 $312 $312 0.00% New
99 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 11 $22 $22 0.00% New