Joseph Jacobs insider trades: Mammoth Energy Services (TUSK) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Joseph reports to the SEC
and 11 more companies
Open-market buys and sales
159 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 17, 2026 | TUSK | ↑ Buy | 4,019,574 | $2.60 | $10.5M | Indirect | Jun 22, 2026 (5d) |
| Jun 17, 2022 | TUSK | ↑ Buy | 45,382 | $2.14 | $97K | Indirect | Jun 21, 2022 (4d) |
| Jun 15, 2022 | TUSK | ↑ Buy | 50,802 | $2.31 | $117K | Indirect | Jun 15, 2022 (0d) |
| Jun 10, 2022 | TUSK | ↑ Buy | 97,768 | $2.47 | $241K | Indirect | Jun 10, 2022 (0d) |
| Nov 20, 2019 | TUSK | ↑ Buy | 16,692 | $1.33 | $22K | Indirect | Nov 22, 2019 (2d) |
| Nov 13, 2019 | TUSK | ↑ Buy | 35,904 | $1.36 | $49K | Indirect | Nov 15, 2019 (2d) |
| Jul 30, 2018 | TUSK | ↓ Sell | 266,026 | $38.01 | $10.1M | Direct | Aug 1, 2018 (2d) |
| Jun 29, 2018 | TUSK | ↓ Sell | 2,764,400 | $38.01 | $105.1M | Direct | Jul 3, 2018 (4d) |
| Oct 19, 2016 | TUSK | ↓ Sell | 171,797 | $14.06 | $2.4M | Direct | Oct 21, 2016 (2d) |
| Jan 21, 2016 | RNO | ↓ Sell | 6,609,896 | $0.52 | $3.4M | Indirect | Jan 25, 2016 (4d) |
| Jan 21, 2016 | RNO | ↓ Sell | 159,216 | $0.52 | $82K | Direct | Jan 25, 2016 (4d) |
| Dec 9, 2015 | FANG | ↓ Sell | 9,822 | $76.74 | $754K | Direct | Dec 10, 2015 (1d) |
| Nov 18, 2015 | FANG | ↓ Sell | 24,749 | $80.04 | $2.0M | Indirect | Nov 19, 2015 (1d) |
| Sep 18, 2015 | FANG | ↓ Sell | 70,000 | $68.58 | $4.8M | Indirect | Sep 22, 2015 (4d) |
| Sep 17, 2015 | FANG | ↓ Sell | 328,814 | $69.92 | $23.0M | Indirect | Sep 17, 2015 (0d) |
| Sep 10, 2015 | FANG | ↓ Sell | 49,433 | $67.80 | $3.4M | Indirect | Sep 10, 2015 (0d) |
| Sep 3, 2015 | FANG | ↓ Sell | 120,000 | $67.92 | $8.2M | Indirect | Sep 4, 2015 (1d) |
| Aug 31, 2015 | FANG | ↓ Sell | 241,315 | $68.44 | $16.5M | Indirect | Sep 1, 2015 (1d) |
| Jun 22, 2015 | DAVE | ↑ Buy | 585,703 | $19.20 | $11.2M | Indirect | Jun 22, 2015 (0d) |
| Jun 18, 2015 | FANG | ↓ Sell | 18,299 | $80.53 | $1.5M | Indirect | Jun 22, 2015 (4d) |
| Jun 3, 2015 | DAVE | ↑ Buy | 4,283 | $20.89 | $89K | Indirect | Jun 5, 2015 (2d) |
| Mar 20, 2015 | FANG | ↓ Sell | 242,671 | $71.93 | $17.5M | Indirect | Mar 24, 2015 (4d) |
| Mar 19, 2015 | FANG | ↓ Sell | 231,631 | $72.09 | $16.7M | Indirect | Mar 19, 2015 (0d) |
| Mar 12, 2015 | FANG | ↓ Sell | 8,635 | $71.25 | $615K | Indirect | Mar 16, 2015 (4d) |
| Mar 6, 2015 | FANG | ↓ Sell | 316,900 | $71.44 | $22.6M | Indirect | Mar 9, 2015 (3d) |
| Mar 4, 2015 | FANG | ↓ Sell | 1,101,755 | $71.62 | $78.9M | Indirect | Mar 4, 2015 (0d) |
| Feb 25, 2015 | FANG | ↓ Sell | 161,110 | $74.91 | $12.1M | Indirect | Feb 26, 2015 (1d) |
| Feb 3, 2015 | FANG | ↓ Sell | 351,593 | $70.08 | $24.6M | Indirect | Feb 3, 2015 (0d) |
| Jan 26, 2015 | FANG | ↓ Sell | 734,353 | $68.11 | $50.0M | Indirect | Jan 27, 2015 (1d) |
| Jan 7, 2015 | RLJE | ↓ Sell | 13,854 | $1.74 | $24K | Indirect | Jan 8, 2015 (1d) |
| Dec 31, 2014 | RLJE | ↓ Sell | 6,076 | $2.00 | $12K | Indirect | Jan 2, 2015 (2d) |
| Dec 29, 2014 | RLJE | ↓ Sell | 36,019 | $2.02 | $73K | Indirect | Dec 29, 2014 (0d) |
| Dec 18, 2014 | FANG | ↓ Sell | 200,000 | $60.57 | $12.1M | Indirect | Dec 19, 2014 (1d) |
| Dec 16, 2014 | RLJE | ↓ Sell | 8,974 | $2.58 | $23K | Indirect | Dec 16, 2014 (0d) |
| Nov 17, 2014 | FANG | ↓ Sell | 1,358,000 | $64.40 | $87.5M | Indirect | Nov 19, 2014 (2d) |
| Sep 23, 2014 | FANG | ↓ Sell | 1,437,500 | $75.44 | $108.4M | Indirect | Sep 25, 2014 (2d) |
| Jun 27, 2014 | FANG | ↓ Sell | 1,000,000 | $89.12 | $89.1M | Indirect | Jul 1, 2014 (4d) |
| May 23, 2014 | FANG | ↓ Sell | 84,445 | $73.63 | $6.2M | Indirect | May 27, 2014 (4d) |
| May 14, 2014 | FANG | ↓ Sell | 162,900 | $73.64 | $12.0M | Indirect | May 14, 2014 (0d) |
| Mar 21, 2014 | FANG | ↓ Sell | 100,000 | $64.94 | $6.5M | Indirect | Mar 25, 2014 (4d) |
| Mar 20, 2014 | FANG | ↓ Sell | 334,046 | $64.96 | $21.7M | Indirect | Mar 20, 2014 (0d) |
| Mar 17, 2014 | FANG | ↓ Sell | 33,673 | $64.36 | $2.2M | Indirect | Mar 17, 2014 (0d) |
| Mar 4, 2014 | FANG | ↓ Sell | 102,599 | $65.55 | $6.7M | Indirect | Mar 6, 2014 (2d) |
| Mar 3, 2014 | FANG | ↓ Sell | 114,608 | $64.64 | $7.4M | Indirect | Mar 3, 2014 (0d) |
| Feb 24, 2014 | FANG | ↓ Sell | 62,100 | $66.66 | $4.1M | Indirect | Feb 26, 2014 (2d) |
| Dec 20, 2013 | FANG | ↓ Sell | 74,200 | $50.83 | $3.8M | Indirect | Dec 23, 2013 (3d) |
| Dec 3, 2013 | FANG | ↓ Sell | 3,400 | $52.02 | $177K | Indirect | Dec 5, 2013 (2d) |
| Nov 26, 2013 | FANG | ↓ Sell | 20,000 | $52.36 | $1.0M | Indirect | Nov 29, 2013 (3d) |
| Nov 15, 2013 | FANG | ↓ Sell | 748,687 | $53.29 | $39.9M | Indirect | Nov 15, 2013 (0d) |
| Nov 12, 2013 | FANG | ↓ Sell | 299,713 | $53.71 | $16.1M | Indirect | Nov 12, 2013 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other TUSK insiders
Open-market trades in the last 12 months
About Joseph Jacobs's insider trades
Joseph Jacobs is Chief Business Officer at Mammoth Energy Services (TUSK). Since Aug 19, 2005, Joseph has reported 14 open-market purchases worth $56.4M and 145 sales worth $1.74B on SEC Form 4. In the last 12 months: 1 buy ($10.5M).
Their filings also include other transactions (19 filings), grants and awards (17 filings), option exercises (6 filings), shares returned to the company (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every TUSK insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.