InsiderTrades

Form 4 for KLRA Kailera Therapeutics, Inc.

Accepted 2026-04-20 18:10:33 ET · period of report 2026-04-20 · accession 0001193125-26-164417 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
DI 2026-04-20 18:10 2026-04-20 KLRA BAIN CAPITAL INVESTORS LLC 10% C - Cnv Deriv — +17.86M 17.86M New —
DI 2026-04-20 18:10 2026-04-20 KLRA BAIN CAPITAL INVESTORS LLC 10% P - Purchase $16.00 +8.40M 26.26M +47% +$134.38M
DI 2026-04-20 18:10 2026-04-20 KLRA BAIN CAPITAL INVESTORS LLC 10% C - Cnv Deriv $0.00 -17.86M 0 -100% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-04-20 C A 17,857,143 — 17,857,143 I See footnotes — — (F1) Each share of the Issuer's Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 1:1 basis upon the closing of the Issuer's initial public offering. These securities had no expiration date. (F2) Represents securities held directly by BCPE Perseus Investor, LP ("BCPE Perseus"). (F3) Bain Capital Investors, LLC ("BCI") is the manager of Bain Capital XIV General Partner, LLC ("BCPE Fund XIV GP"), which is the general partner of Bain Capital Fund XIV, L.P. ("BCPE Fund XIV"), which is the managing member of BCPE Perseus Investor GP, LLC ("BCPE Perseus GP"), which is the general partner of BCPE Perseus. As a result, each of BCI, BCPE Fund XIV GP, BCPE Fund XIV and BCPE Perseus GP may be deemed to share voting and dispositive power with respect to the securities held by BCPE Perseus. BCI, BCPE Fund XIV GP, BCPE Fund XIV and BCPE Perseus GP each disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
2 Common Common Stock 2026-04-20 P A 8,398,438 $16.00 26,255,581 I See footnotes — — (F2) Represents securities held directly by BCPE Perseus Investor, LP ("BCPE Perseus"). (F3) Bain Capital Investors, LLC ("BCI") is the manager of Bain Capital XIV General Partner, LLC ("BCPE Fund XIV GP"), which is the general partner of Bain Capital Fund XIV, L.P. ("BCPE Fund XIV"), which is the managing member of BCPE Perseus Investor GP, LLC ("BCPE Perseus GP"), which is the general partner of BCPE Perseus. As a result, each of BCI, BCPE Fund XIV GP, BCPE Fund XIV and BCPE Perseus GP may be deemed to share voting and dispositive power with respect to the securities held by BCPE Perseus. BCI, BCPE Fund XIV GP, BCPE Fund XIV and BCPE Perseus GP each disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
3 Derivative Series B Preferred Stock 2026-04-20 C D 17,857,143 $0.00 0 I See footnotes — · — to — 17,857,143 Common Stock (F1) Each share of the Issuer's Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 1:1 basis upon the closing of the Issuer's initial public offering. These securities had no expiration date. (F1) Each share of the Issuer's Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 1:1 basis upon the closing of the Issuer's initial public offering. These securities had no expiration date. (F1) Each share of the Issuer's Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 1:1 basis upon the closing of the Issuer's initial public offering. These securities had no expiration date. (F2) Represents securities held directly by BCPE Perseus Investor, LP ("BCPE Perseus"). (F3) Bain Capital Investors, LLC ("BCI") is the manager of Bain Capital XIV General Partner, LLC ("BCPE Fund XIV GP"), which is the general partner of Bain Capital Fund XIV, L.P. ("BCPE Fund XIV"), which is the managing member of BCPE Perseus Investor GP, LLC ("BCPE Perseus GP"), which is the general partner of BCPE Perseus. As a result, each of BCI, BCPE Fund XIV GP, BCPE Fund XIV and BCPE Perseus GP may be deemed to share voting and dispositive power with respect to the securities held by BCPE Perseus. BCI, BCPE Fund XIV GP, BCPE Fund XIV and BCPE Perseus GP each disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.