Weirdness abounds at Fabrinet. Consider the following:

On Aug. 1, CEO David Mitchell sells 40,000 shares of company stock in a transaction valued at $734,000.

On Aug. 12, JDS Uniphase lowers its outlook, saying its current quarter sales will be as much as 8% lower than the consensus analyst forecast. JDS is Fabrinet’s largest customer, and one of two 10%-plus customers of the EMS firm.

Today Fabrinet announces it will postpone its fourth-quarter earnings release in the wake of an internal investigation into “certain accounting issues” uncovered by company management during its most recent fiscal quarter. The firm says it is also looking into whether there may be any “deficiencies” with its disclosure controls and procedures.

There’s no obvious straight line here. I’m hoping the timing of Mitchell’s transaction was just good luck, and that the investigation isn’t related to any insider shenanigans. Based on similar announcements from other industry companies, the investigation has something to do with the company’s inventory management. Such tightly sequenced events bear further watching, however.