RUBI · Insider Trading

Rubico Inc. Common Stock

Every open-market purchase and sale reported by RUBI officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
26
code S
Reporting Insiders
1
current holders
RUBI — Recent Form 4 Transactions (latest 2026-06-16)
FiledInsiderRole TypeSharesValue
2026-06-16 HRT FINANCIAL LP 10%+ Owner MIXED −66,057 −$131.88K
2020-06-10 David Day CFO MIXED — −$67.20K
2020-06-05 Michael G. Barrett CEO Sell −134,278 −$705.13K
2020-06-05 Adam Lee Soroca Head of Global Buyer Team Sell −26,975 −$141.65K
2020-06-05 David Day CFO Sell −29,018 −$229.24K
2020-06-05 Eve Filip See remarks Sell −11,524 −$60.51K
2020-06-05 David Day CFO Sell −36,150 −$189.83K
2020-06-05 Blima Tuller Chief Accounting Officer Sell −13,299 −$69.84K
2020-06-05 Thomas Kershaw Chief Technology Officer Sell −52,285 −$274.56K
2020-06-05 Thomas Kershaw Chief Technology Officer MIXED — −$73.44K
2020-06-05 Joseph R Prusz Global Chief Revenue Officer Sell −27,857 −$146.28K
2020-05-26 Eve Filip See remarks Sell −4,204 −$22.20K
2020-05-26 Blima Tuller Chief Accounting Officer Sell −12,958 −$65.70K
2020-05-20 Eve Filip See remarks Sell −10,993 −$57.79K
2020-05-20 Joseph R Prusz Global Chief Revenue Officer Sell −26,586 −$139.76K
2020-05-20 Michael G. Barrett CEO Sell −128,213 −$674.02K
2020-05-20 Thomas Kershaw Chief Technology Officer Sell −49,915 −$262.40K
2020-05-20 Blima Tuller Chief Accounting Officer Sell −12,688 −$66.70K
2020-05-20 David Day CFO Sell −34,508 −$181.41K
2020-05-20 Adam Lee Soroca Head of Global Buyer Team Sell −25,751 −$135.37K
2020-04-20 Blima Tuller Chief Accounting Officer A +43,998 —
2020-04-03 Douglas S Knopper Director A +102,884 —
2020-04-03 Michael G. Barrett CEO A +175,992 —
2020-04-03 James Rossman Director A +180,038 —
2020-04-03 Eve Filip See remarks A +48,764 —
2020-04-03 Paul Caine Director A +186,172 —
2020-04-03 Joseph R Prusz Global Chief Revenue Officer A +112,928 —
2020-04-03 Thomas Kershaw Chief Technology Officer A +153,993 —
2020-04-03 David Day CFO A +153,993 —
2020-04-03 Aaron Saltz General Counsel & Secy A +355,927 —
2020-04-03 Mark Zagorski President & COO A +436,918 —
2020-04-03 Adam Lee Soroca Head of Global Buyer Team A +112,928 —
2020-04-03 Rachel Lam Director A +167,641 —
2020-03-17 Frank Addante Director Sell −25,000 −$126.00K
2020-02-20 Frank Addante Director Sell −25,000 −$292.50K
2020-01-21 Adam Lee Soroca Head of Global Buyer Team F −44,968 −$469.92K
2020-01-21 Thomas Kershaw Chief Technology Officer F −50,237 −$524.98K
2020-01-21 Frank Addante Director Sell −25,000 −$259.75K
2020-01-21 Joseph R Prusz Global Chief Revenue Officer F −17,972 −$187.81K
2020-01-21 Blima Tuller Chief Accounting Officer F −9,327 −$97.47K
2020-01-21 David Day CFO MIXED −50,000 −$521.52K
2020-01-21 Eve Filip Co-General Counsel F −13,078 −$136.67K
2020-01-21 Michael G. Barrett President and CEO F −30,274 −$316.36K
2020-01-21 Jonathan Feldman Co-General Counsel & Secretary MIXED −25,000 −$259.53K
2019-11-22 Eve Filip Co-General Counsel Sell −3,801 −$31.74K
2019-11-19 Joseph R Prusz Global Chief Revenue Officer Sell −7,965 −$60.30K
2019-11-19 Blima Tuller Chief Accounting Officer Sell −12,370 −$93.64K
2019-11-19 Jonathan Feldman Co-General Counsel & Secretary Sell −1,598 −$12.10K
2019-11-19 Thomas Kershaw Chief Technology Officer Sell −20,140 −$152.46K
2019-11-19 Michael G. Barrett President and CEO Sell −83,395 −$631.30K
RUBI — Current Insider Holders
InsiderRole Shares HeldValue
HRT FINANCIAL LP 10%+ Owner 23,096 $3.58K
RUBI Insider Trading FAQ
Who are the insiders at RUBI?
1 officers, directors and 10%+ beneficial owners currently report holdings in RUBI via SEC Form 4.
Are RUBI insiders buying or selling?
Across the 50 most recent Form 4 filings for RUBI, 0 were open-market purchases (code P) and 26 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is RUBI insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent RUBI filing is dated 2026-06-16.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the RUBI quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.