to+verb+ing or verb + ing

[dean]

"Generally, they are few issues have threatened the external validity of the study results such as one of the authors reported owning stocks with drug companies."

I am always confuse when should I use "ing", ..the authors reported owning stocks with drug companies or reported to own?

Would somebody please help me with this?

Regards,

dean

[Casiopea]

How's this?

. . . one of the authors reported that s/he owned stocks with drug companies.

[dean]

Thanks again Casiopea

Regards,

dean