Integrated Surgical Systems Inc

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Integrated Surgical Systems Inc
TickerAREN
CIK #0000894871
CUSIP02366A101
SectorLife Sciences - Surgical & Medical Instruments & Apparatus
Address401 Wilshire Blvd, Suite 1020, Santa Monica,, CA 90401
Source [EDGAR]
CIK Filing 2011 - 2025
[0000894871] 10-K
[0000894871] 10-Q
[0000894871] 3
[0000894871] 4
[0000894871] 5
[0000894871] 8-K
[0000894871] D
[0000894871] SC 13D
[0000894871] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Heckman James Charles Jr Arena Group Holdings Inc [2024-01-25] 1.2
Simplify Inventions LLC Arena Group Holdings Inc [2023-12-07] 0.0
Warlock Partners LLC Arena Group Holdings Inc [2023-05-03] 9.63
B Riley Asset Management LLC Arena Group Holdings Inc [2023-02-15] 0.07
180 Degree Capital Corp /NY/ Themaven Inc [2022-01-05] 8.7
Athletes First LLC Themaven Inc [2021-09-08] 5.7
TCS Capital Management LLC Themaven Inc [2021-07-09] 0.0
B Riley Financial Inc Themaven Inc [2020-11-27] 4.99
180 Degree Capital Corp /NY/ Themaven Inc [2020-08-31] 0.3
Strome Mark E Themaven Inc [2018-06-26] 19.4
Heckman James Charles Jr Integrated Surgical Systems Inc [2016-11-28] 18.57
Form 3/4/5 Filer 2011 - 2025
Arena Group Holdings, Inc.
Edmondson Paul Taylor
Allred Herbert Hunt
Randall Cavitt
Petersmarck Lynn Marie
Lee Laura Anne
Petzel Christopher
Strome Mark E
Weintraub Michael Lawrence
Silverstein Sara
Wait Geoffrey
Smith Douglas Baker
Fowler Christopher
Zola Carlo
Simplify Inventions, LLC
Bhargava Manoj
Frankl Jason
Heckman James Charles Jr
Warlock Partners LLC
Pierce Brock Jeffrey
Roundtable LLC Series 1111
Sims Todd D.
BRF Investments, LLC
B. Riley Securities, Inc.
B. Riley Financial, Inc.
B Riley Principal Investments LLC
Riley Bryant R
Levinsohn Ross
Kraft Andrew Q.
Barrett Henry Robertson
Zimak Avi
Shribman Daniel
Marchisotto Jill
Christoforatos Spiridon
Semler Eric
BRF Finance Co., LLC
BRC Partners Management GP, LLC
BRC Partners Opportunity Fund, LP
B Riley Capital Management LLC
Bailey David F
Sen Baishali
Fichthorn John
Jacobs Joshua
180 Degree Capital Corp /NY/
BR Dialectic Capital Management, LLC
Dialectic Antithesis Partners, LP
Sornsin William Carrier Jr
Mills Peter B
Joldersma Benjamin Gary
Strome Mezzanine Fund LP
Marlett Christopher A
Levande Robert
Heimbigner Martin L.
Tomczak Michael J
Schuman Gary Alan
Form 13F Holdings
Firm Period DFND Voting Shares
Vanguard Group Inc [2025-06-30] SOLE 0 1,342,867
BlackRock, Inc. [2025-06-30] SOLE 688,957 699,717
Geode Capital Management LLC [2025-06-30] DFND 437,924 437,924
State Street Corp [2025-06-30] DFND 169,929 183,672
Informed Momentum Co LLC [2025-06-30] SOLE 156,030 156,030
Northern Trust Corp [2025-06-30] DFND 149,965 149,965
Susquehanna International Group LLP [2025-06-30] OTR 49,423 137,923
Marshall Wace LLP [2025-06-30] OTR 0 53,744
Citadel Advisors LLC [2025-06-30] DFND 45,700 45,700
Charles Schwab Investment Management Inc [2025-06-30] SOLE 45,556 45,556
Jane Street Group LLC [2025-06-30] DFND 13,100 42,800
LPL Financial LLC [2025-06-30] SOLE 0 33,005
Goldman Sachs Group Inc [2025-06-30] DFND 31,800 31,800
Millennium Management LLC [2025-06-30] SOLE 29,162 29,162
Bridgeway Capital Management LLC [2025-06-30] SOLE 27,600 27,600
Vanguard Group Inc [2025-06-30] DFND 0 25,669
Barclays PLC [2025-06-30] SOLE 24,011 24,011
Morgan Stanley [2025-06-30] DFND 17,247 22,247
Bank of New York Mellon Corp [2025-06-30] DFND 20,706 20,706
Nuveen, LLC [2025-06-30] DFND 16,736 16,736
UBS Group AG [2025-06-30] DFND 16,611 16,611
Renaissance Technologies LLC [2025-06-30] SOLE 16,600 16,600
New York State Common Retirement Fund [2025-06-30] SOLE 15,600 15,600
Two Sigma Investments LP [2025-06-30] SOLE 15,469 15,469
Pathstone Holdings, LLC [2025-06-30] SOLE 0 15,345
Lazard Asset Management LLC [2025-06-30] SOLE 14,786 14,786
Bank of America Corp /DE/ [2025-06-30] DFND 5,093 12,474
RhumbLine Advisers [2025-06-30] SOLE 5,467 12,016
State of Wyoming [2025-06-30] SOLE 10,951 10,951
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. [2025-06-30] DFND 7,041 7,041
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