Main Capital acquires majority stake in PRIM’X

Paris — Main Capi­tal Part­ners (“Main”) and PRIM’X announce that Main has acqui­red a majo­rity stake in PRIM’X, a leading deve­lo­per of encryp­tion and data secu­rity soft­ware. The company prima­rily serves defense, govern­ment and secu­rity custo­mers in Europe. This tran­sac­tion repres­ents Main’s second plat­form invest­ment in France, follo­wing the opening of its Paris office in Febru­ary 2025. PRIM’X’s manage­ment team will remain opera­tio­nally active and retain a signi­fi­cant mino­rity stake, ensu­ring conti­nuity and long-term commit­ment. The acqui­si­tion has been appro­ved by the rele­vant regu­la­tory authorities. 

PRIM’X was foun­ded in 2003 by CEO Serge Binet and has since specia­li­zed in encryp­tion and data secu­rity solu­ti­ons for compa­nies and (semi-)public insti­tu­ti­ons. From its loca­ti­ons in Lyon (head­quar­ters) and Paris, the company serves over 1,000 custo­mers world­wide. PRIM’X’s products are aimed at secu­rity-criti­­cal sectors — custo­mers include govern­ment orga­niza­ti­ons and compa­nies from the defence, tele­com­mu­ni­ca­ti­ons, aero­space and finan­cial services sectors. 

PRIM’X enables its custo­mers to operate secu­rely, increase data secu­rity and meet the highest stan­dards of digi­tal sove­reig­nty. From a strong posi­tion in its home market of France, PRIM’X is now also active in Spain, the Nether­lands, Mexico and South Korea, where demand for confi­den­tial data manage­ment solu­ti­ons is growing signi­fi­cantly. PRIM’X is excel­lently posi­tio­ned to take advan­tage of these growth opportunities. 

Further growth through new sectors, stra­te­gic acqui­si­ti­ons and added value for customers.

In the next phase of growth, Main Capi­tal and PRIM’X will work toge­ther to further expand the company’s inter­na­tio­nal posi­tion, deepen exper­tise in exis­ting markets, enter new indus­tries and expand the product port­fo­lio with inno­va­tive and comple­men­tary solu­ti­ons. With Main’s local presence in the Bene­lux region, DACH region and Scan­di­na­via, among others, and its exper­tise in inter­na­tio­nal buy-and-build stra­te­gies, this part­ner­ship can acce­le­rate PRIM’X’s growth and inno­va­tion and further increase custo­mer value. 

Jonas Kruip, Co-Head Main France: “In a world where cyber thre­ats are beco­ming incre­asingly complex, high-quality data encryp­tion is not a luxury, but an abso­lute neces­sity. Protec­ting sensi­tive infor­ma­tion is crucial for trust in digi­tal systems. The acqui­si­tion of PRIM’X under­lines our commit­ment to secu­rity soft­ware and our willing­ness to colla­bo­rate with like-minded entre­pre­neurs. We look forward to support­ing PRIM’X’s manage­ment team in the next phase of growth — with a focus on orga­nic growth and targe­ted acqui­si­ti­ons. Our goal is to jointly deve­lop new markets and sectors, streng­then the product port­fo­lio and drive innovation.”

Streng­thening natio­nal and Euro­pean digi­tal sovereignty.

With the stra­te­gic support of Main, PRIM’X further streng­thens its posi­tion in Europe and conti­nues to promote product certi­fi­ca­tion by reco­gni­zed cyber­se­cu­rity autho­ri­ties such as ANSSI (France), CCN (Spain) and AIVD (Nether­lands). This contri­bu­tes to the confi­dence in PRIM’X products at natio­nal and Euro­pean level. The deve­lo­p­ment acti­vi­ties based in France remain a central foun­da­tion for further growth and custo­mer support. 

Serge Binet, foun­der and CEO of PRIM’X: “Our new part­ner­ship with Main Capi­tal is a signi­fi­cant mile­stone in the deve­lo­p­ment of PRIM’X. With a streng­the­ned inter­na­tio­nal perspec­tive, we conti­nue our commit­ment to grow globally and invest in data secu­rity inno­va­tion to streng­then the digi­tal sove­reig­nty of govern­ments and busi­nesses. While PRIM’X has successfully grown inde­pendently to date, we see Main Capi­tal as a stra­te­gic part­ner that can help us acce­le­rate our growth and expand our reach. The entire manage­ment team remains actively invol­ved and leading this new phase of growth as we focus on tech­no­logy inno­va­tion and market expansion.”

About PRIM’X

PRIM’X is a leading soft­ware deve­lo­per specia­li­zing in encryp­tion and data secu­rity solu­ti­ons for busi­nesses and (semi-)governmental orga­niza­ti­ons. The company offers a wide range of proprie­tary soft­ware solu­ti­ons — inclu­ding file and folder encryp­tion, hard disk and laptop encryp­tion, email encryp­tion, encryp­tion during data trans­fer and within Micro­soft 365 cloud envi­ron­ments. PRIM’X was foun­ded in 2003 by the current CEO and serves over 1,000 custo­mers in Switz­er­land and abroad with around 50 employees from offices in Lyon and Paris. — www.primx.eu

About Main Capi­tal Partners

Main Capi­tal Part­ners is a leading inves­tor in soft­ware compa­nies in the Bene­lux region, DACH, France, Scan­di­na­via and the USA with assets under manage­ment of around 6.5 billion euros. As a stra­te­gic part­ner, Main has been support­ing soft­ware compa­nies in profi­ta­ble growth and the deve­lo­p­ment of leading soft­ware groups for over twenty years. With offices in The Hague, Düssel­dorf, Stock­holm, Antwerp, Paris and a part­ner office in Boston, the team compri­ses 90 employees and mana­ges an active port­fo­lio of over 50 soft­ware compa­nies with a total of more than 12,000 employees. Through the Main Social Insti­tute, Main awards scho­lar­ships for IT and compu­ter science cour­ses. In April 2025, Main also announ­ced the acqui­si­tion of Paris-based Trace One. —- www.main.nl