John L. Knopf serves as Executive at ACCELERON PHARMA INC, where they oversee executive responsibilities. Since joining the company, John L. Knopf has executed 94 insider transactions totaling $21.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Apr 7, 2015 involved selling 4,500 shares valued at $156.6K.
John L. Knopf currently holds 245,627 shares of ACCELERON PHARMA INC (XLRN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, John L. Knopf has been a net seller of XLRN stock. They have purchased $0 and sold $21.0M worth of shares.
John L. Knopf's most recent insider trade was on Apr 7, 2015, when they sold 4,500 shares at $34.80 per share.
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| $34.75 |
| Discretionary |
| Apr 7, 2015 | XLRN | $17.7K | Sale | 500 | $35.43 | Discretionary |
| Apr 7, 2015 | XLRN | $156.6K | Sale | 4,500 | $34.80 | Discretionary |
| Mar 9, 2015 | XLRN | $102.4K | Sale | 2,501 | $40.93 | Discretionary |
| Mar 9, 2015 | XLRN | $702.6K | Sale | 17,499 | $40.15 | Discretionary |
| Feb 9, 2015 | XLRN | $72.1K | Sale | 1,937 | $37.20 | Discretionary |
| Feb 9, 2015 | XLRN | $660.9K | Sale | 18,063 | $36.59 | Discretionary |
| Jan 28, 2015 | XLRN | $0 | Gift | 1,416 | $N/A | Discretionary |
| Jan 21, 2015 | XLRN | $5.0K | Option Exercise | 12,500 | $0.40 | Discretionary |
| Jan 7, 2015 | XLRN | $745.6K | Sale | 18,800 | $39.66 | Discretionary |
| Jan 7, 2015 | XLRN | $46.7K | Sale | 1,200 | $38.93 | Discretionary |
| Dec 8, 2014 | XLRN | $312.0K | Sale | 7,036 | $44.35 | Discretionary |
| Dec 8, 2014 | XLRN | $21.4K | Sale | 451 | $47.45 | Discretionary |
| Dec 8, 2014 | XLRN | $55.8K | Sale | 1,200 | $46.54 | Discretionary |
| Dec 8, 2014 | XLRN | $193.9K | Sale | 4,300 | $45.10 | Discretionary |
| Dec 8, 2014 | XLRN | $15.4K | Sale | 400 | $38.43 | Discretionary |
| Dec 8, 2014 | XLRN | $232.2K | Sale | 5,413 | $42.90 | Discretionary |
| Dec 8, 2014 | XLRN | $32.4K | Sale | 800 | $40.55 | Discretionary |
| Dec 8, 2014 | XLRN | $16.6K | Sale | 400 | $41.58 | Discretionary |
| Nov 12, 2014 | XLRN | $315.5K | Sale | 9,399 | $33.57 | Discretionary |
| Nov 12, 2014 | XLRN | $345.3K | Sale | 10,601 | $32.57 | Discretionary |
| Oct 8, 2014 | XLRN | $302.0K | Sale | 10,000 | $30.20 | Discretionary |
| Oct 7, 2014 | XLRN | $292.2K | Sale | 10,000 | $29.22 | Discretionary |
| Sep 9, 2014 | XLRN | $5.4K | Sale | 220 | $24.77 | Discretionary |
| Sep 9, 2014 | XLRN | $156.1K | Sale | 6,447 | $24.21 | Discretionary |
| Sep 9, 2014 | XLRN | $5.6K | Sale | 227 | $24.71 | Discretionary |
| Sep 9, 2014 | XLRN | $155.1K | Sale | 6,406 | $24.21 | Discretionary |
| Sep 8, 2014 | XLRN | $83.9K | Sale | 3,367 | $24.92 | Discretionary |
| Sep 8, 2014 | XLRN | $83.0K | Sale | 3,333 | $24.91 | Discretionary |