Proteon Therapeutics Inc

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Proteon Therapeutics Inc
TickerTARA
CIK #0001359931
CUSIP04300J107
SectorLife Sciences - Biological Products, (No Disgnostic Substances)
Address200 West Street, Waltham, MA 02451
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Proteon Therapeutics Inc 2017-08-16 22.0 M Exemption: 506(b) · Duration: One year or less · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001359931] 10-K
[0001359931] 10-Q
[0001359931] 3
[0001359931] 4
[0001359931] 5
[0001359931] 8-K
[0001359931] D
[0001359931] SC 13D
[0001359931] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
BlackRock Inc Protara Therapeutics Inc [2026-04-27] 0.0
Millennium Management LLC Protara Therapeutics Inc [2026-03-02] 0.0
BlackRock Inc Protara Therapeutics Inc [2025-07-17] 0.0
Janus Henderson Group PLC Protara Therapeutics Inc [2025-02-14] 0.0
Adage Capital Management LP Protara Therapeutics Inc [2025-02-12] 0.0
Velan Capital Investment Management LP Protara Therapeutics Inc [2024-12-17] 5.9
Opaleye Management Inc Protara Therapeutics Inc [2024-11-18] 8.15
Woodline Partners LP Protara Therapeutics Inc [2024-11-14] 7.4
RA Capital Management LP Protara Therapeutics Inc [2024-04-25] 0.99
Citadel Advisors LLC Protara Therapeutics Inc [2024-04-22] 5.7
CVI Investments Inc Protara Therapeutics Inc [2024-04-09] 5.3
OrbiMed Advisors LLC Protara Therapeutics Inc [2022-02-11] 6.0
Rock Springs Capital Management LP Protara Therapeutics Inc [2020-10-02] 6.16
Perceptive Advisors LLC Protara Therapeutics Inc [2020-10-01] 5.8
Ikarian Capital LLC Artara Therapeutics Inc [2020-02-21] 5.3
Opaleye Management Inc Artara Therapeutics Inc [2020-01-21] 37.79
Wilson Donald R Jr Artara Therapeutics Inc [2020-01-16] 7.68
New Leaf Biopharma Opportunities II LP Proteon Therapeutics Inc [2018-11-06] 8.6
RA Capital Management LLC Proteon Therapeutics Inc [2018-02-14] 0.4
Flynn James E Proteon Therapeutics Inc [2017-06-29] 1.98
Intersouth Partners VI LP Proteon Therapeutics Inc [2015-04-07] 5.5
FMR LLC Proteon Therapeutics Inc [2015-02-13] 0.0
Prism Venture Partners V L P Proteon Therapeutics Inc [2015-02-12] 7.6
Pharmstandard International Sa Proteon Therapeutics Inc [2015-02-12] 7.1
MPM Bio IV NVS Strategic Fund LP Proteon Therapeutics Inc [2015-02-05] 6.0
TVM Life Science Ventures VI LP Proteon Therapeutics Inc [2014-11-04] 13.0
Skyline Venture Partners Qualified Purchaser Fund IV L P Proteon Therapeutics Inc [2014-11-03] 11.0
RA Capital Management LLC Proteon Therapeutics Inc [2014-10-31] 8.3
Abingworth LLP Proteon Therapeutics Inc [2014-10-31] 13.5
Flynn James E Proteon Therapeutics Inc [2014-10-27] 2.53
Form 3/4/5 Filer 2011 - 2026
Shefferman Jesse
Proteon Therapeutics Inc
Levy Richard S
Beshar Luke M
Flannelly Barry P
Garceau Roger
Huang Jane
Sargen Gregory
Smith Cynthia
Solomon Michael Edward
Conkling William
Zummo Jacqueline
Fabbio Patrick
Fry Hannah
Nicacio Leonardo Viana
Opaleye Management Inc
Bandari Jathin
Davis Blaine
Olivo Martin Sebastian
Marshall Randall
Braunstein Scott
Opaleye LP
Casoy Julio
Abingworth LLP
Haines Timothy
Freund John Gordon
Burke Steven Keith
Noyes Timothy P
Hartman Bradley J
Kowalsky Matthew Paul
Eldridge George Arthur
Gottlieb Daniel Philip
Toner E Scott
Deerfield Management Company LP
Flynn James E
Leff Jonathan S
Canute Scott A
Birner Hubert
Bohlin Garen G
Kingsley Stuart A
Hastings Paul J
Deerfield Capital LP
Deerfield International Master Fund LP
Deerfield Partners LP
Deerfield Private Design Fund IV LP
Deerfield Special Situations Fund LP
Deerfield Mgmt III LP
Deerfield Private Design Fund III LP
Deerfield Mgmt IV LP
TVM Life Science Ventures VI GmbH & Co KG
Schuhsler Helmut
TVM Life Science Ventures VI LP
Fischer Stefan
O'Leary Brendan
Phelps Gregory D
Kobyzev Dmitry
Goll Alexandra
Prism Venture Partners V-A LP
Prism Venture Partners V L P
Kaneko Yasunori
Skyline Venture Partners Qualified Purchaser Fund IV L P
Skyline Venture Management IV LLC
Pharmstandard International SA
Joint Stock Co Pharmstandard
Deerfield Special Situations International Master Fund LP
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Fry Hannah
Common Stock
2026-01-26 Tax withheld 1,457 $6.67 9,718
Zummo Jacqueline
Common Stock
2026-01-26 Tax withheld 3,724 $6.67 24,839
Fabbio Patrick
Common Stock
2026-01-26 Tax withheld 3,261 $6.67 21,751
Shefferman Jesse
Common Stock
2026-01-26 Tax withheld 8,732 $6.67 58,242
Fabbio Patrick
Common Stock
2026-01-20 Tax withheld 3,063 $5.60 17,153
Zummo Jacqueline
Common Stock
2026-01-20 Tax withheld 6,578 $5.60 36,837
Fry Hannah
Common Stock
2026-01-20 Tax withheld 2,132 $5.60 11,939
Shefferman Jesse
Common Stock
2026-01-20 Tax withheld 16,322 $5.60 91,403
Shefferman Jesse
Common Stock
2026-01-16 Grant 87,000 $0.00
Fry Hannah
Common Stock
2026-01-16 Grant 9,500 $0.00
Nicacio Leonardo Viana
Common Stock
2026-01-16 Grant 26,000 $0.00
Zummo Jacqueline
Stock Option (Right to Buy) · derivative
2026-01-16 Grant 180,000 $0.00
Zummo Jacqueline
Common Stock
2026-01-16 Grant 30,000 $0.00
Conkling William
Common Stock
2026-01-16 Grant 26,000 $0.00
Fabbio Patrick
Common Stock
2026-01-16 Grant 28,000 $0.00
Conkling William
Stock Option (Right to Buy) · derivative
2026-01-16 Grant 158,000 $0.00
Nicacio Leonardo Viana
Stock Option (Right to Buy) · derivative
2026-01-16 Grant 158,000 $0.00
Fabbio Patrick
Stock Option (Right to Buy) · derivative
2026-01-16 Grant 175,000 $0.00
Fry Hannah
Stock Option (Right to Buy) · derivative
2026-01-16 Grant 55,000 $0.00
Shefferman Jesse
Stock Option (Right to Buy) · derivative
2026-01-16 Grant 524,000 $0.00
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 115 45,781,351
2025-12-31 105 39,876,230
2025-09-30 81 26,288,200
2025-06-30 77 29,843,247
2025-03-31 60 29,232,249
2024-12-31 61 29,900,468
2024-09-30 36 10,458,451
2024-06-30 40 10,487,517
2024-03-31 36 4,691,282
2023-12-31 31 4,358,664
2023-09-30 32 5,118,943
2023-06-30 30 5,137,032
Form 13F Holdings
Firm Period DFND Voting Shares
Assenagon Asset Management SA [2026-06-30] SOLE 59,954 59,954
Gamma Investing LLC [2026-06-30] DFND 732 732
Aspect Partners LLC [2026-06-30] SOLE 230 230
Farther Finance Advisors LLC [2026-06-30] SOLE 0 92
Eastern Bank [2026-06-30] DFND 71 71
True Wealth Design LLC [2026-06-30] SOLE 0 52
IFP Advisors LLC [2026-06-30] SOLE 2 2
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