This reminds me a little of EMI and Enodis, where takeover talks failed, directors piled in, then the takeover talks were resumed, this time successfully.

Fiberweb (FWEB, 51p) however is tiny, with just a £60m market cap.

Takeover talks collapsed on April 23rd (see Independent comment here).

Between the 8th and the 15th of May, the CFO Abrams, CEO Dayan, and Non exec Stillwell all increased their positions substantially:

Abrams (CFO) bought 108,000 shares at 45.6p, investing £50k. He now owns 108,000 shares.

Dyan (CEO) bought 760,000 shares at 45.6p, investing £347k. He now owns 960,000 shares.

and Stillwell, a non exec director of Fiberweb, bought 60,000 shares at 40.5p, investing £24k. he now owns 87,000 shares.

So £370k invested between them, increasing existing positions substantially, with the potential now that capital markets are recovering for the bidder to come back again.