(Adds: Sapiens, Macquarie, Allianz, Shell, Johnson & Johnson,...

(Adds: Sapiens, Macquarie, Allianz, Shell, Johnson & Johnson, Chesapeake Energy, Yapi Kredi Bank)

April 5 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 1930 GMT on Friday:

** Sapiens International SPNS.O , an Israel-headquartered insurance software firm with a market value of nearly $2 billion, is exploring options that include a potential sale, according to people familiar with the matter.

		** A consortium comprising financial conglomerate 
Macquarie  (MQG)  is buying a part of Digi Communication NV's 

DIGI.BX fiber networks in Spain for up to 750 million euros ($809.63 million), the Bucharest-based operator said.

		** Allianz  ALVG.DE  agreed to sell Fireman's Fund, its 
U.S. insurance unit for mid-sized corporations and entertainment 

industry clients, to Arch Insurance for $1.4 billion, the German insurer said.

		** Shell  SHEL.L  and Saudi Aramco  2222.SE , which are 
competing to buy the assets of Temasek-owned liquefied natural 

gas (LNG) trading firm Pavilion Energy, are now locked in price negotiations after completing the due diligence process, three sources with knowledge of the matter said.

		** Johnson & Johnson  JNJ.N  agreed to buy Shockwave 
Medical  SWAV.O  in a deal valued at $13.1 billion including 

debt, as it builds its cardiac-health-centric medical devices business to help drive growth.

		** Chesapeake Energy  CHK.O  and Southwestern Energy 
 SWN.N  said the closing date of their proposed $7.4 billion 

merger has been pushed back to the second half of the year after receiving a U.S. regulator's second request for information.

		** Shares in Turkey's Yapi Kredi Bank  YKBNK.IS  jumped 
almost 6% after Bloomberg News reported that First Abu Dhabi 

Bank (FAB) FAB.AD was studying potential purchases in Turkey, including Yapi Kredi.

** Holcim HOLN.S said it will buy Tensolite, a maker and distributor of pre-cast concrete systems in South America, the latest acquisition by the Swiss building materials company.

** APM Human Services International (APM) said it had received a letter of intention from its largest shareholder, Madison Dearborn Capital Partners, to acquire all shares of the Australian employment services firm.