Spero Therapeutics Inc. (SPRO)

Hedge Fund Holdings
Filing Period:
Last update:
No. Hedge Fund Shares Value (x$1000) Activity % Port
1. 3,829,209 $56,366 -3% 10.18%
2. 2,137,978 $31,471 -5% 1.17%
3.
Rock Springs Capital Management

Kris Jenner, Gordon Bussard, Graham Mcphail

965,928 $14,218 -22% 0.31%
4. 49,602 $730 0%
5. 42,300 $623 -35% 0%
Insider Trading: Purchases See All
Insider Price Amount Relationship Remaining Holdings Date Form 4
$12.50 80,000 Large Shareholder 1,934,006 2018-07-17 Filing
$14.00 428,571 Large Shareholder 1,854,006 2017-11-06 Filing
$14.00 428,571 Director 2,408,128 2017-11-06 Filing
$14.00 428,571 Director 1,854,006 2017-11-06 Filing
$14.00 5,000 Officer 15,181 2017-11-06 Filing
Insider Trading: Sales See All
Insider Price Amount Relationship Remaining Holdings Date Form 4
$21.74 3,000 Large Shareholder 3,829,209 2021-02-08 Filing
$18.99 34,144 Large Shareholder 3,832,209 2021-02-04 Filing
$18.98 29,354 Large Shareholder 3,866,353 2021-02-03 Filing
$18.99 22,841 Large Shareholder 3,895,707 2021-02-02 Filing
$19.24 13,661 Large Shareholder 3,918,548 2021-02-01 Filing
Institutional Investors' Holdings
Filing Period:
No. Name Shares Value (x$1000) % Port
1. 23,500 $328 0%
2. 17,500 $244 0%
3. 10,000 $140 0.04%
4. 2,060 $28 0%
5. 590 $9 0%
News See All