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RTW Investments (KLRA) discloses large preferred holdings before IPO

(Neutral)
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Kailera Therapeutics, Inc. received an initial ownership report showing significant preferred stock holdings by funds managed by RTW Investments, LP, with Roderick Wong also listed as a reporting person and a ten percent owner.

The affiliated RTW funds hold Series A Preferred Stock convertible into 8,250,000 shares of Common Stock and Series B Preferred Stock convertible into 2,026,820 shares of Common Stock. Each preferred share has no expiration date and will automatically convert into Common Stock on a 1-for-1 basis immediately prior to the closing of Kailera’s initial public offering for no additional consideration. The securities are held indirectly through RTW-managed funds, and the reporting persons disclaim beneficial ownership except to the extent of their pecuniary interest.

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Insider RTW INVESTMENTS, LP, WONG RODERICK
Role 10% Owner | 10% Owner
Type Security Shares Price Value
holding Series A Preferred Stock -- -- --
holding Series B Preferred Stock -- -- --
Holdings After Transaction: Series A Preferred Stock — 8,250,000 shares (Indirect, See footnote); Series B Preferred Stock — 2,026,820 shares (Indirect, See footnote)
Footnotes (2)
  1. F1. Each share of Series A Preferred Stock and Series B Preferred Stock has no expiration date and will automatically convert into shares of Common Stock on a 1-for-1 basis immediately prior to the closing of the Issuer's initial public offering for no additional consideration.
  2. F2. Held by certain affiliated funds managed by RTW Investments, LP ("RTW"). Roderick Wong, M.D. serves as the Managing Partner and Chief Investment Officer of RTW. The Reporting Persons disclaim beneficial ownership of the reported securities for purposes of Section 16 under the Securities Exchange Act of 1934, as amended, except to the extent of their pecuniary interest therein.
Series A underlying common 8,250,000 shares Underlying Common Stock for Series A Preferred
Series B underlying common 2,026,820 shares Underlying Common Stock for Series B Preferred
Series A exercise price $0.0000 per share Conversion price for Series A Preferred
Series B exercise price $0.0000 per share Conversion price for Series B Preferred
Form 3 holding entries 2 entries Series A and Series B Preferred Stock
Ten percent owners reported 2 reporting persons RTW Investments, LP and Roderick Wong
Series A Preferred Stock financial
"Each share of Series A Preferred Stock and Series B Preferred Stock has no expiration date"
Series A preferred stock is a type of ownership share in a company that gives investors certain advantages, such as priority in receiving profits or getting their money back if the company is sold or goes bankrupt. It is often issued during early funding stages to attract investors by offering more security than common shares. This stock matters to investors because it provides a safer way to invest while still holding potential for future gains.
Series B Preferred Stock financial
"Each share of Series A Preferred Stock and Series B Preferred Stock has no expiration date"
Series B preferred stock is a type of ownership share issued by a company that offers certain advantages over common stock, such as priority in receiving dividends or assets if the company is sold or liquidated. It is typically issued after an initial round of funding, making it a way for investors to support a company's growth while gaining some protections and benefits. This stock matters to investors because it often provides a more secure investment position with potential for future growth.
Common Stock financial
"will automatically convert into shares of Common Stock on a 1-for-1 basis"
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
initial public offering financial
"automatically convert into shares of Common Stock on a 1-for-1 basis immediately prior to the closing of the Issuer's initial public offering"
An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.
Section 16 regulatory
"The Reporting Persons disclaim beneficial ownership of the reported securities for purposes of Section 16 under the Securities Exchange Act of 1934"
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.
pecuniary interest financial
"except to the extent of their pecuniary interest therein"

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FAQ

What insider positions in Kailera Therapeutics (KLRA) does RTW Investments report?

RTW-managed funds report indirect holdings of Kailera Therapeutics preferred stock. These positions include Series A and Series B Preferred Stock, which are convertible into 8,250,000 and 2,026,820 shares of Common Stock, respectively, under the terms described in the ownership filing.

How will Kailera Therapeutics (KLRA) preferred stock convert into common shares?

Each share of Series A and Series B Preferred Stock automatically converts into one share of Common Stock. This 1-for-1 conversion occurs immediately before the closing of Kailera Therapeutics’ initial public offering and requires no additional consideration from the holders.

Who holds the reported Kailera Therapeutics (KLRA) preferred shares?

The reported preferred shares are held by affiliated funds managed by RTW Investments, LP. Roderick Wong serves as Managing Partner and Chief Investment Officer of RTW, and the reporting persons state these securities are owned indirectly through those managed funds.

Does RTW Investments claim full beneficial ownership of its KLRA holdings?

No. The reporting persons expressly disclaim beneficial ownership of the reported Kailera Therapeutics securities for Section 16 purposes, except to the extent of their pecuniary interest. This language limits how their economic and voting control over the shares should be interpreted.

What does the Kailera Therapeutics (KLRA) Form 3 indicate about share expiration?

The filing states that each share of Series A Preferred Stock and Series B Preferred Stock has no expiration date. These preferred shares remain outstanding until they automatically convert into Common Stock immediately prior to the closing of the company’s initial public offering.
SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
RTW INVESTMENTS, LP

(Last)(First)(Middle)
40 10TH AVENUE, FLOOR 7

(Street)
NEW YORK NEW YORK 10014

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
04/16/2026
3. Issuer Name and Ticker or Trading Symbol
Kailera Therapeutics, Inc. [ KLRA ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Series A Preferred Stock (1) (1)Common Stock8,250,000(1)ISee footnote(2)
Series B Preferred Stock (1) (1)Common Stock2,026,820(1)ISee footnote(2)
1. Name and Address of Reporting Person*
RTW INVESTMENTS, LP

(Last)(First)(Middle)
40 10TH AVENUE, FLOOR 7

(Street)
NEW YORK NEW YORK 10014

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
WONG RODERICK

(Last)(First)(Middle)
C/O RTW INVESTMENTS, LP
40 10TH AVENUE, FLOOR 7

(Street)
NEW YORK NEW YORK 10014

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. Each share of Series A Preferred Stock and Series B Preferred Stock has no expiration date and will automatically convert into shares of Common Stock on a 1-for-1 basis immediately prior to the closing of the Issuer's initial public offering for no additional consideration.
2. Held by certain affiliated funds managed by RTW Investments, LP ("RTW"). Roderick Wong, M.D. serves as the Managing Partner and Chief Investment Officer of RTW. The Reporting Persons disclaim beneficial ownership of the reported securities for purposes of Section 16 under the Securities Exchange Act of 1934, as amended, except to the extent of their pecuniary interest therein.
/s/ Roderick Wong, for RTW Investments, LP, By: Roderick Wong, M.D., Managing Partner04/16/2026
/s/ Roderick Wong, By: Roderick Wong, M.D.04/16/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)