Investor · Seattle, WA

Dennis Weibling

Open Dennis in the network graph →

Filings

75

SEC Form D

Connections

324

co-filers

Capital

$32.7M

across filings

Active

Aug 2014

to Oct 2020

Most-connected co-filers (324)

Archie Dunham · Greenwood Village, CO17 shared Barry Rowan · Greenwood Village, CO17 shared Carmichael Roberts · Greenwood Village, CO16 shared Howard E. Janzen · McLean, VA16 shared Richard C. Crawshaw · Grand Cayman, Cayman Islands15 shared Bryan H. Lawrence · New York, NY15 shared Rick Nagel · Oklahoma City, OK14 shared W H. Keenan · New York, NY12 shared Greg Sands · San Francisco, CA11 shared Chris Langer · Seattle, WA10 shared David Giersdorf · Bellevue, WA10 shared Theodore T. Sotir · NEW YORK, NY10 shared William Y. Zakroff · Houston, TX10 shared Jonathan Slavin · Seattle, WA10 shared Richard M. Kent · LAGUNA NIGUEL, CA10 shared Lucille J. Len · Basking Ridge, NJ10 shared Ian Loring · BOSTON, MA10 shared Keri J. Ingrassia-Squiers · Andover, NJ10 shared Alan A. Shuch · NEW YORK, NY10 shared Robert Keogh · DUBLIN 1, Ireland10 shared Jason C. Harms · Commerce City, CO10 shared David M. Shubotham · Dublin, Ireland10 shared Chris Gordon · BOSTON, MA10 shared Hugo Macneill · DUBLIN 1, Ireland10 shared

Recent filings (75)

Sandy AI, Inc.Mar 2026 · 1 co-filer$1.0M Costanoa Ascent Fund IV, L.P.Feb 2026 · 1 co-filer$150.0M Costanoa Ventures VI, L.P.Feb 2026 · 1 co-filer$300.0M Sandy AI, Inc.Nov 2025 · 5 co-filers$1.5M Costanoa FP II, L.P.Oct 2025 · 5 co-filers$2.0M Palladyne AI Corp.Nov 2024 · 10 co-filers$6.9M Costanoa FP, L.P.May 2023 · 5 co-filers$2.0M Yorktown Eagle Partners LLCApr 2023 · 13 co-filers Costanoa Ventures V, L.P.Feb 2023 · 5 co-filers$225.0M Costanoa Ventures Opportunity Fund III, L.P.Feb 2023 · 4 co-filers$175.0M Sarcos Technology & Robotics CorpMay 2022 · 25 co-filers$53.9M Sarcos Technology & Robotics CorpMay 2022 · 25 co-filers$53.9M Costanoa Ventures Opportunity Fund II, L.P.Oct 2021 · 4 co-filers$115.0M Costanoa Ventures IV, L.P.Oct 2021 · 5 co-filers$225.0M Tempered Networks, Inc.Oct 2020 · 18 co-filers$12.0M Yorktown Midstream Partners, L.P.Aug 2020 · 14 co-filers Costanoa Ventures Opportunity Fund II, L.P.Mar 2020 · 4 co-filers$100.0M Costanoa Ventures IV, L.P.Mar 2020 · 5 co-filers$200.0M Yorktown Renewable Energy Infrastructure Fund, L.P.Jan 2020 · 14 co-filers Yorktown Energy Partners XII, L.P.Oct 2019 · 14 co-filers Yorktown Midstream Partners, L.P.Aug 2019 · 10 co-filers Tempered Networks, Inc.May 2019 · 18 co-filers$7.0M Yorktown Energy Partners XII, L.P.Oct 2018 · 14 co-filers COSTANOA VENTURES OPPORTUNITY FUND, L.P.Apr 2018 · 4 co-filers$75.0M YT Triple Crown Co Investment Partners, LPApr 2018 · 16 co-filers$49.0M

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