People · Operator

DAVID B. KAYSEN

Named in public records as an officer, director or promoter · active 2015–2022 · Pharmaceuticals, Biotechnology, Healthtech

4
Companies
6
Filings
$36.3M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Sun BioPharma, Inc.PharmaceuticalsSeries A$22.3M$13.1M2016
Sun BioPharma, Inc.BiotechnologySeed$8.0M$52.2M2015
Atrility Medical, Inc.HealthtechSeed$5.0M$2.5M2022
Nuviant Medical Inc.BiotechnologyPre-Seed$968K$7.9M
Operator network

DAVID B. KAYSEN at the center, the companies they're named on, and every other operator named alongside them — an interlock map of shared founding teams, boards and funds. Name-matched, so treat as a research lead.

JEFFREY S. MATHIESEN · 4 companies · 1 sharedJEFFREY S. MATHIE…J. ROBERT PAULSON · 4 companies · 1 sharedJ. ROBERT PAULSONJ. Robert Paulson, Jr. · 3 companies · 1 sharedJ. Robert Paulson…Jeffrey E Jacob · 2 companies · 1 sharedJeffrey E JacobJennifer K Simpson · 2 companies · 1 sharedJennifer K SimpsonArthur J. Fratamico · 1 companies · 1 sharedArthur J. Fratami…D. Robert Schemel · 2 companies · 2 sharedD. Robert SchemelMichael T. Cullen · 2 companies · 2 sharedMichael T. CullenPAUL W. SCHAFFER · 2 companies · 2 sharedPAUL W. SCHAFFERThomas X. Neenan · 3 companies · 1 sharedThomas X. NeenanJeffrey R. Harder · 2 companies · 1 sharedJeffrey R. HarderChristopher R. Johnson · 1 companies · 1 sharedChristopher R. Jo…Christopher Eckstrom · 4 companies · 1 sharedChristopher Eckst…Michael Partsch · 4 companies · 1 sharedMichael PartschMichael J. Partsch · 2 companies · 1 sharedMichael J. PartschSean McCormick · 2 companies · 1 sharedSean McCormickChris R. Eckstrom · 1 companies · 1 sharedChris R. EckstromAlexander Ruckdaeschel · 6 companies · 1 sharedAlexander Ruckdae…CHRISTOPHER R MILLER · 2 companies · 1 sharedCHRISTOPHER R MIL…RONALD CONQUEST · 2 companies · 1 sharedRONALD CONQUESTWilliam Rosellini · 2 companies · 1 sharedWilliam RoselliniBRIAN B BLISCHAK · 1 companies · 1 sharedBRIAN B BLISCHAKSun BioPharma, Inc. · $22.3M raisedSun BioPharma, Inc.Sun BioPharma, Inc. · $8.0M raisedSun BioPharma, Inc.Atrility Medical, Inc. · $5.0M raisedAtrility Medical, Inc.Nuviant Medical Inc. · $1.0M raisedNuviant Medical Inc.DAVID B. KAYSENDK
DAVID B. KAYSEN Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

People named alongside DAVID B. KAYSEN on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.

OperatorSharedTheir companies
Michael T. Cullen22
PAUL W. SCHAFFER22
D. Robert Schemel22
Alexander Ruckdaeschel16
J. ROBERT PAULSON14
JEFFREY S. MATHIESEN14
Michael Partsch14
Christopher Eckstrom14
Thomas X. Neenan13
J. Robert Paulson, Jr.13
Jeffrey E Jacob12
Jeffrey R. Harder12
William Rosellini12
CHRISTOPHER R MILLER12
Sean McCormick12
Michael J. Partsch12
Jennifer K Simpson12
RONALD CONQUEST12
SCOTT ROBERT KELLEN11
Nicholas Von Bergen11

People are matched by normalized name across records; a common name may merge distinct individuals. Treat as a research lead, the same way modeled valuations are directional, not quoted.