The following bids, mergers, acquisitions and disposals were reported by 1130 GMT on Monday:
** Rocket Lab NASDAQ:RKLB said it would acquire satellite communications provider Iridium Communications NASDAQ:IRDM in a cash-and-stock deal valued at about $8 billion, marking one of the biggest consolidation moves in the commercial space industry.
** Building materials firm Martin Marietta Materials NYSE:MLM said it would merge with limestone supplier Lhoist North America in a cash-and-stock deal worth $13.5 billion.
** Zymeworks NASDAQ:ZYME will acquire Theravance Biopharma NASDAQ:TBPH for $929 million in cash, marking the oncology-focused drugmaker's entry into the highly competitive respiratory disease segment.
** Private equity firm CVC EURONEXT:CVC said it entered into an agreement to acquire Italian dessert ingredients maker Irca from Advent International.
** British private equity group Bridgepoint LSE:BPT has agreed to buy U.S.-based Kayne Anderson's real estate business in a deal valued at about $1.4 billion, it said, driving its shares up more than 10%.
** Ipsen EURONEXT:IPN will buy U.S.-based Kartos Therapeutics for $450 million to expand its oncology pipeline with a late-stage blood cancer treatment, the French biotech company said on Monday.
** Swedish care provider Ambea OMXSTO:AMBEA said it had made a recommended public offer for peer Humana OMXSTO:HUM, valuing the company at about 2.96 billion Swedish crowns ($304.13 million).
** U.S. pipeline operator Williams NYSE:WMB is in advanced talks to acquire rival natural gas pipeline operator Momentum Midstream for about $5.5 billion, Bloomberg News reported on Sunday, citing people familiar with the matter.
** Finnish energy company Fortum OMXHEX:FORTUM has agreed terms for a recommended, conditional voluntary cash tender offer to buy all shares in Norway's Elmera Group OSL:ELMRA, worth about NOK 5.1 billion ($513.55 million), topping a rival approach disclosed last week.
** Investment vehicles managed by Sixth Street have agreed to acquire a majority stake in Monument Re, a Bermuda-based reinsurer and consolidator of European life insurance portfolios.
** The midstream joint venture of oil and gas company Matador Resources NYSE:MTDR has agreed to acquire the operating subsidiaries of Cardinal Midstream Partners for $752 million in cash.
** Turkish construction firm Libco Insaat has signed a deal to buy a 32% stake in Turkish conglomerate Tekfen Holding BIST:TKFEN.