Investor · Luxembourg, Luxembourg

Karsten Langer

Open Karsten in the network graph →

Filings

11

SEC Form D

Connections

35

co-filers

Capital

$617.9M

across filings

Active

Jan 2022

to Sep 2025

Most-connected co-filers (35)

Paul Ring · San Jose, CA5 shared Olivier B. Vincent · REDWOOD CITY, CA3 shared Euan B. Abraham · REDWOOD CITY, CA3 shared Erik Hayden · San Jose, CA3 shared Riyaz H. Nooruddin · George Town, Grand Cayman, Cayman Islands3 shared Joshua Burroughs · San Jose, CA3 shared Morgan Mackles · San Jose, CA3 shared Jason Harris · Lexington, KY3 shared Spoke Real Estate Enterprises LLC · Dublin, OH3 shared Greg N. Dingens · Chicago, IL3 shared Roy H. Levitt · Delray Beach, FL3 shared Paul H. Barone · Delray Beach, FL3 shared Peter Hommeyer · Wayzata, MN3 shared Bela Schwartz · New York, NY3 shared Ali Kashani · Redwood City, CA3 shared Touraj B. Parang · Redwood City, CA3 shared Daniel N. Kanter · Chicago, IL3 shared James B. Jordan · Redwood City, CA3 shared Ryan C. Kuo · San Jose, CA2 shared Roelof Rongen · Bedminster, NJ2 shared Sarfraz Maredia · Houston, TX2 shared Camden Mcrae · El Segundo, CA2 shared Neal Johnson · Wayzata, MN2 shared Ali B. Pourdad · REDWOOD CITY, CA2 shared

Recent filings (11)

Adolore Biotherapeutics, Inc.Sep 2025 · 11 co-filers$1.0M Riverside Europe Fund VII, SCSpAug 2025 · 5 co-filers$600.0M Riverside Europe Fund VII, SCSpAug 2025 · 5 co-filers$600.0M Serve Robotics Inc. /DE/Sep 2024 · 21 co-filers$5.0M Riverside Europe Fund VII, SCSpAug 2024 · 5 co-filers$600.0M Riverside Europe Fund VII, SCSpAug 2024 · 5 co-filers$600.0M Adolore Biotherapeutics, Inc.Jan 2024 · 11 co-filers Serve Robotics Inc. /DE/Jan 2024 · 23 co-filers$5.0M Serve Robotics Inc. /DE/Aug 2023 · 22 co-filers$37.0M Riverside Europe Fund VII, SCSpAug 2023 · 5 co-filers$600.0M Riverside Europe Fund VII, SCSpAug 2023 · 5 co-filers$600.0M Big Bites Inc.Aug 2022 · 6 co-filers$300K Big Bites Inc.Jan 2022 · 2 co-filers$2.0M Adolore Biotherapeutics, Inc.Jan 2022 · 7 co-filers$2.5M

Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Karsten in the interactive graph →