Type / Class
Equity / Common Stock, par value $0.001 per share
Shares outstanding
55.7M
Number of holders
50
Total 13F shares, excl. options
10.7M
Shares change
+2.63M
Total reported value, excl. options
$113M
Value change
+$24.5M
Number of buys
36
Number of sells
-10
Price
$10.51

Significant Holders of Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share (SPRO) as of Q3 2018

56 filings reported holding SPRO - Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share as of Q3 2018.
Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share (SPRO) has 50 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC). These institutions hold a total of 10.7M shares of 55.7M outstanding shares and own 19.3% of the company stock.
Largest 10 shareholders include BVF INC/IL (1.49M shares), Atlas Venture Associates IX, LLC (1.38M shares), Alphabet Inc. (1.11M shares), EcoR1 Capital, LLC (893K shares), Aquilo Capital Management, LLC (800K shares), FMR LLC (618K shares), Artal Group S.A. (600K shares), AWM Investment Company, Inc. (540K shares), Rock Springs Capital Management LP (525K shares), and VHCP Management II, LLC (474K shares).
This table shows the top 50 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
Investor Option Weight % Change % Value $ * Price $ Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.