13D
13D 13DRequired SEC filing by 5% or more shareholder. The filing is often used by activist investors. A passive investor may file the shorter 13G.
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Form SC 13D/A Gridsum Holding Inc. Filed by: Qi Guosheng
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Gridsum (GSUM) Announces Receipt of Preliminary $3.80/Share Non-Binding Proposal
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58,575 total articles have been posted to this entity.
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