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Spero Therapeutics Inc. (SPRO)

Hedge Fund Holdings
Filing Period:
Last update:
No. Hedge Fund Shares Value (x$1000) Activity % Port
1. 1,488,088 $15,640 +42% 1.37%
2.
EcoR1 Capital

Oleg Nodelman

892,741 $9,383 0.84%
3. 70,000 $736 0.3%
4.
Rock Springs Capital Management

Kris Jenner, Gordon Bussard, Graham Mcphail

525,000 $5,518 0.19%
5. 20,000 $210 0.01%
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
$17.50 4,000 Officer 1,500 2018-07-05 Filing
$17.50 2,000 Officer 15,181 2018-07-05 Filing
$17.92 200 Officer, Director 65,817 2018-07-06 Filing
$17.90 200 Officer, Director 66,017 2018-07-06 Filing
$17.71 100 Officer, Director 66,217 2018-07-06 Filing
Institutional Investors' Holdings
Filing Period:
No. Name Shares Value (x$1000) % Port
1. 1,376,968 $14,472 7.65%
2. 799,691 $8,405 3.51%
3. 226,444 $2,380 1.39%
4. 474,015 $4,982 1.33%
5. 600,000 $6,306 0.16%