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Who

Jack L. Acosta

Director

Company insider

Files Form 4 as: Director, Rimini Street; Director, Five9; Director, Sumtotal Systems.

In numbers

Trades disclosed
87
Buys
5
Sells
10
Bought
$1.1M
Sold
$19.0M
Companies
3
Companies where not an officer
3
First trade
9 Jun 2006
Last trade
3 Jun 2026
Last filed
4 Jun 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
RMNI Rimini StreetDirector · Business Services · last 3 Jun 20260 buys · 0 sells
FIVN Five9Director · Payments & Processors · last 14 May 20241 buy · 10 sells
Sumtotal SystemsDirector · last 21 Jul 20094 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
3 Jun 2026filed 4 Jun 2026RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code A—44,117 at $0.00filing
3 Jun 2026filed 4 Jun 2026RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code A—44,117 at $0.00filing
2 Jun 2026filed 4 Jun 2026RMNI Rimini StreetBusiness ServicesSEC FORM 4 Code M—55,727 at $0.00filing
2 Jun 2026filed 4 Jun 2026RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code M—55,727 at $0.00filing
2 Jun 2026filed 4 Jun 2026RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code M—55,727 at $0.00filing
2 Jun 2026filed 4 Jun 2026RMNI Rimini StreetBusiness ServicesSEC FORM 4 Code M—55,727 at $0.00filing
4 Jun 2025filed 5 Jun 2025RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code A—55,727 at $0.00filing
3 Jun 2025filed 5 Jun 2025RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code M—65,335 at $0.00filing
3 Jun 2025filed 5 Jun 2025RMNI Rimini StreetBusiness ServicesSEC FORM 4 Code M—65,335 at $0.00filing
6 Jun 2024filed 7 Jun 2024RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code A—65,335 at $0.00filing
5 Jun 2024filed 7 Jun 2024RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code M—40,178 at $0.00filing
5 Jun 2024filed 7 Jun 2024RMNI Rimini StreetBusiness ServicesSEC FORM 4 Code M—40,178 at $0.00filing
14 May 2024filed 16 May 2024FIVN Five9Payments & ProcessorsSEC FORM 4 Code A—3,755 at $0.00filing
7 Jun 2023filed 8 Jun 2023RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code A—40,178 at $0.00filing
6 Jun 2023filed 8 Jun 2023RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code M—45,918 at $0.00filing
6 Jun 2023filed 8 Jun 2023RMNI Rimini StreetBusiness ServicesSEC FORM 4 Code M—45,918 at $0.00filing
16 May 2023filed 18 May 2023FIVN Five9Payments & ProcessorsSEC FORM 4 Code A—3,669 at $0.00filing
28 Mar 2023filed 30 Mar 2023RMNI Rimini Streetoption or derivative · Business ServicesSEC FORM 4 Code A—45,918 at $0.00filing
11 Jan 2023filed 12 Jan 2023FIVN Five9Payments & ProcessorsSEC FORM 4 Sold$309K4,375 at $70.64filing
11 Jan 2023filed 12 Jan 2023FIVN Five9Payments & ProcessorsSEC FORM 4 Sold$44K625 at $71.14filing

News

Reviewing Netskope (NASDAQ:NTSK) and Five9 (NASDAQ:FIVN)FIVN · dailypolitical.com · 12 Oct 2026

0 headlines in the last 90 days name Jack L. Acosta; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Financials11
Not placed4

Buys in green, sells in red, by the company’s sector.

Related people

Alexander GuaschEVP & Chief Delivery Officer · EVP & Chief Delivery Officer at Rimini Street, filing Form 4 there in the last year
Steven HershkowitzEVP & Chief Revenue Officer · EVP & Chief Revenue Officer at Rimini Street, filing Form 4 there in the last year
David W. RoweEVP & Chief Marketing Officer · EVP & Chief Marketing Officer at Rimini Street, filing Form 4 there in the last year
Seth A. RavinPresident, CEO & Chairman · President, CEO & Chairman at Rimini Street, filing Form 4 there in the last year
Keith Conan CostelloEVP & Chief Operating Officer · EVP & Chief Operating Officer at Rimini Street, filing Form 4 there in the last year
Andy DignanPresident · Also traded FIVN in the last 90 days
Bryan M. LeeChief Financial Officer · Also traded FIVN in the last 90 days
Leena MansharamaniSVP, Chief Accounting Officer · Also traded FIVN in the last 90 days