Reporting Manager
John P. McKearn, Ph.D.
Symbol
SPRB
Shares outstanding
41,893,357 shares
Disclosed Ownership
1,759,521 shares
Ownership
4.2%
Form type
SCHEDULE 13D/A
Filing time
10 Jan 2025, 11:05:40 UTC
Date of event
07 Jan 2025

Reporting Managers (12)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
RiverVest Venture Fund III, L.P. 0.2% 720,656 0 720,656 By: RiverVest Venture Partners III, L.P., its general partner By: RiverVest Venture Partners III, LLC, its general partner By:/s/ Jay Schmelter Jay Schmelter/Member 0001601559
RiverVest Venture Fund III (Ohio), L.P. 0.1% 38,251 0 38,251 By: RiverVest Venture Partners III (Ohio), LLC, its general partner, as indicated in the signature block that immediately follows. Jay Schmelter/Member 0001636686
RiverVest Venture Partners III (Ohio), LLC 0.1% 38,251 0 38,251 By: RiverVest Venture Partners III, L.P., its sole member By: RiverVest Venture Partners III, LLC, its general partner By: /s/ Jay Schmelter Jay Schmelter/Member 0001752269
RiverVest Venture Partners III, L.P. 0.2% 758,907 0 758,907 By: RiverVest Venture Partners III, LLC, its general partner By: /s/ Jay Schmelter Jay Schmelter/Member 0001752268
RiverVest Venture Partners III, LLC 0.2% 758,907 0 758,907 By: /s/ Jay Schmelter Jay Schmelter/Member 0001752405
RiverVest Venture Fund IV, L.P. 2.4% 1,000,614 0 1,000,614 By: RiverVest Venture Partners IV, L.P., its general partner By: RiverVest Venture Partners IV, LLC, its general partner By: /s/ Jay Schmelter Jay Schmelter/Member 0001725443
RiverVest Venture Partners IV, L.P. 2.4% 1,000,614 0 1,000,614 By: RiverVest Venture Partners IV, LLC, its general partner By: /s/ Jay Schmelter Jay Schmelter/Member
RiverVest Venture Partners IV, LLC 2.4% 1,000,614 0 1,000,614 By: /s/ Jay Schmelter Jay Schmelter/Member
John P. McKearn, Ph.D. 4.2% 1,759,521 0 1,759,521 /s/ John P. McKearn, Ph.D. John P. McKearn, Ph.D. 0001240120
Jay Schmelter 4.2% 1,759,521 0 1,759,521 /s/ Jay Schmelter Jay Schmelter 0001435248
Thomas C. Melzer 0.2% 758,907 0 758,907 /s/ Thomas C. Melzer Thomas C. Melzer 0001611651
Niall O'Donnell, Ph.D. 2.4% 1,000,614 32,500 1,000,614 /s/ Niall O'Donnell, Ph.D. Niall O'Donnell, Ph.D. 0001780235