Mark W Joslin
Insider
First SEC filing: Aug. 11, 2004 · Latest: Feb. 13, 2020
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 3, 2021 | POOL | S | 7,500 | $485.00 | $3,637,500 | 85,195 Direct | -8.09% | Disposed | -67.3% (price as of 2026-10-05) |
| Aug. 3, 2021 | POOL | S | 7,500 | $480.00 | $3,600,000 | 92,695 Direct | -7.49% | Disposed | -66.9% (price as of 2026-10-05) |
| Feb. 28, 2021 | POOL | F | 1,181 | $334.77 | $395,363 | 100,195 Direct | -1.16% | Disposed | -52.6% (price as of 2026-10-05) |
| Feb. 25, 2021 | POOL | F | 1,771 | $322.99 | $572,015 | 101,376 Direct | -1.72% | Disposed | -50.8% (price as of 2026-10-05) |
| Feb. 24, 2021 | POOL | A | 2,640 | · | · | 103,147 Direct | +2.63% | Acquired | (price as of 2026-10-05) |
| Nov. 4, 2020 | POOL | S | 3,799 | $370.09 | $1,405,972 | 100,505 Direct | -3.64% | Disposed | -57.1% (price as of 2026-10-05) |
| Oct. 27, 2020 | POOL | S | 1,201 | $370.01 | $444,382 | 104,304 Direct | -1.14% | Disposed | -57.1% (price as of 2026-10-05) |
| Oct. 26, 2020 | POOL | S | 5,000 | $360.24 | $1,801,200 | 105,505 Direct | -4.52% | Disposed | -55.9% (price as of 2026-10-05) |
| July 31, 2020 | POOL | S | 5,000 | $315.00 | $1,575,000 | 110,505 Direct | -4.33% | Disposed | -49.6% (price as of 2026-10-05) |
| July 29, 2020 | POOL | S | 4,735 | $311.00 | $1,472,585 | 115,505 Direct | -3.94% | Disposed | -48.9% (price as of 2026-10-05) |
| July 28, 2020 | POOL | S | 265 | $311.00 | $82,415 | 120,240 Direct | -0.22% | Disposed | -48.9% (price as of 2026-10-05) |
| March 1, 2020 | POOL | F | 1,476 | · | · | 120,503 Direct | -1.21% | Disposed | (price as of 2026-10-05) |
| Feb. 26, 2020 | POOL | A | 4,290 | · | · | 121,979 Direct | +3.65% | Acquired | (price as of 2026-10-05) |
| Feb. 26, 2020 | POOL | F | 1,460 | $220.01 | $321,215 | 117,689 Direct | -1.23% | Disposed | -27.8% (price as of 2026-10-05) |
| Oct. 21, 2019 | POOL | S | 5,000 | $214.84 | $1,074,200 | 120,920 Direct | -3.97% | Disposed | -26.1% (price as of 2026-10-05) |
| Aug. 21, 2019 | POOL | S | 7 | $200.00 | $1,400 | 125,920 Direct | -0.01% | Disposed | -20.6% (price as of 2026-10-05) |
| Aug. 9, 2019 | POOL | S | 1,429 | $200.00 | $285,800 | 125,927 Direct | -1.12% | Disposed | -20.6% (price as of 2026-10-05) |
| March 5, 2019 | POOL | M | 13,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 5, 2019 | POOL | S | 13,000 | $160.05 | $2,080,650 | 127,356 Direct | -9.26% | Disposed | -0.8% (price as of 2026-10-05) |
| March 5, 2019 | POOL | M | 13,000 | $18.44 | $239,720 | 140,356 Direct | +10.21% | Acquired | 761.0% (price as of 2026-10-05) |
| Feb. 27, 2019 | POOL | F | 1,460 | $160.66 | $234,564 | 127,356 Direct | -1.13% | Disposed | -1.2% (price as of 2026-10-05) |
| Feb. 27, 2019 | POOL | F | 1,460 | $160.66 | $234,564 | 127,356 Direct | -1.13% | Disposed | -1.2% (price as of 2026-10-05) |
| Feb. 27, 2019 | POOL | A | 5,140 | · | · | 125,458 Direct | +4.27% | Acquired | (price as of 2026-10-05) |
| Feb. 27, 2019 | POOL | F | 3,358 | $160.66 | $539,496 | 120,318 Direct | -2.72% | Disposed | -1.2% (price as of 2026-10-05) |
| Aug. 22, 2018 | POOL | M | 5,473 | · | · | 13,000 Direct | -29.63% | Disposed | (price as of 2026-10-05) |
| Aug. 22, 2018 | POOL | S | 5,473 | $162.33 | $888,432 | 123,701 Direct | -4.24% | Disposed | -2.2% (price as of 2026-10-05) |
| Aug. 22, 2018 | POOL | M | 5,473 | $18.44 | $100,922 | 129,174 Direct | +4.42% | Acquired | 761.0% (price as of 2026-10-05) |
| Aug. 21, 2018 | POOL | M | 7,527 | · | · | 18,473 Direct | -28.95% | Disposed | (price as of 2026-10-05) |
| Aug. 21, 2018 | POOL | S | 7,527 | $162.24 | $1,221,180 | 123,701 Direct | -5.74% | Disposed | -2.1% (price as of 2026-10-05) |
| Aug. 21, 2018 | POOL | M | 7,527 | $18.44 | $138,798 | 131,228 Direct | +6.08% | Acquired | 761.0% (price as of 2026-10-05) |
| May 11, 2018 | POOL | M | 13,000 | · | · | 26,000 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| May 11, 2018 | POOL | S | 13,000 | $150.00 | $1,950,000 | 123,701 Direct | -9.51% | Disposed | 5.9% (price as of 2026-10-05) |
| May 11, 2018 | POOL | M | 13,000 | $18.44 | $239,720 | 136,701 Direct | +10.51% | Acquired | 761.0% (price as of 2026-10-05) |
| Feb. 28, 2018 | POOL | A | 6,000 | · | · | 123,701 Direct | +5.10% | Acquired | (price as of 2026-10-05) |
| Feb. 27, 2018 | POOL | F | 2,667 | $140.56 | $374,874 | 117,701 Direct | -2.22% | Disposed | 13.0% (price as of 2026-10-05) |
| Feb. 26, 2018 | POOL | F | 2,223 | $142.53 | $316,844 | 120,368 Direct | -1.81% | Disposed | 11.4% (price as of 2026-10-05) |
| Feb. 22, 2018 | POOL | M | 40,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 22, 2018 | POOL | S | 3,226 | $143.11 | $461,673 | 122,591 Direct | -2.56% | Disposed | 10.9% (price as of 2026-10-05) |
| Feb. 22, 2018 | POOL | S | 17,625 | $142.13 | $2,505,041 | 125,817 Direct | -12.29% | Disposed | 11.7% (price as of 2026-10-05) |
| Feb. 22, 2018 | POOL | S | 12,649 | $141.38 | $1,788,316 | 143,442 Direct | -8.10% | Disposed | 12.3% (price as of 2026-10-05) |
| Feb. 22, 2018 | POOL | S | 6,500 | $140.44 | $912,860 | 156,091 Direct | -4.00% | Disposed | 13.1% (price as of 2026-10-05) |
| Feb. 22, 2018 | POOL | M | 40,000 | $20.34 | $813,600 | 162,591 Direct | +32.63% | Acquired | 680.6% (price as of 2026-10-05) |
| March 1, 2017 | POOL | M | 4,968 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 1, 2017 | POOL | A | 7,500 | · | · | 122,584 Direct | +6.52% | Acquired | (price as of 2026-10-05) |
| March 1, 2017 | POOL | S | 4,968 | $117.25 | $582,498 | 115,084 Direct | -4.14% | Disposed | 35.4% (price as of 2026-10-05) |
| March 1, 2017 | POOL | M | 4,968 | $37.85 | $188,039 | 120,052 Direct | +4.32% | Acquired | 319.5% (price as of 2026-10-05) |
| Feb. 28, 2017 | POOL | F | 3,388 | $114.71 | $388,637 | 115,084 Direct | -2.86% | Disposed | 38.4% (price as of 2026-10-05) |
| Feb. 27, 2017 | POOL | F | 1,867 | $117.15 | $218,719 | 118,472 Direct | -1.55% | Disposed | 35.5% (price as of 2026-10-05) |
| Feb. 27, 2017 | POOL | M | 1,932 | · | · | 4,968 Direct | -28.00% | Disposed | (price as of 2026-10-05) |
| Feb. 27, 2017 | POOL | S | 1,932 | $117.25 | $226,527 | 120,339 Direct | -1.58% | Disposed | 35.4% (price as of 2026-10-05) |
| Feb. 27, 2017 | POOL | M | 1,932 | $37.85 | $73,126 | 122,271 Direct | +1.61% | Acquired | 319.5% (price as of 2026-10-05) |
| Feb. 21, 2017 | POOL | M | 600 | · | · | 6,900 Direct | -8.00% | Disposed | (price as of 2026-10-05) |
| Feb. 21, 2017 | POOL | S | 600 | $117.36 | $70,416 | 120,335 Direct | -0.50% | Disposed | 35.3% (price as of 2026-10-05) |
| Feb. 21, 2017 | POOL | M | 600 | $37.85 | $22,710 | 120,935 Direct | +0.50% | Acquired | 319.5% (price as of 2026-10-05) |
| July 26, 2016 | POOL | M | 7,500 | · | · | 7,500 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| July 26, 2016 | POOL | S | 7,500 | $100.85 | $756,375 | 120,359 Direct | -5.87% | Disposed | 57.4% (price as of 2026-10-05) |
| July 26, 2016 | POOL | M | 7,500 | $37.85 | $283,875 | 127,859 Direct | +6.23% | Acquired | 319.5% (price as of 2026-10-05) |
| Feb. 27, 2016 | POOL | F | 1,947 | $81.83 | $159,323 | 120,359 Direct | -1.59% | Disposed | 94.0% (price as of 2026-10-05) |
| Feb. 25, 2016 | POOL | A | 9,000 | · | · | 122,306 Direct | +7.94% | Acquired | (price as of 2026-10-05) |
| Nov. 3, 2015 | POOL | S | 6,215 | $82.00 | $509,630 | 112,959 Direct | -5.22% | Disposed | 93.6% (price as of 2026-10-05) |
| Nov. 2, 2015 | POOL | S | 369 | $82.00 | $30,258 | 119,174 Direct | -0.31% | Disposed | 93.6% (price as of 2026-10-05) |
| Oct. 27, 2015 | POOL | M | 20,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Oct. 27, 2015 | POOL | F | 3,924 | $81.73 | $320,709 | 119,543 Direct | -3.18% | Disposed | 94.3% (price as of 2026-10-05) |
| Oct. 27, 2015 | POOL | F | 9,492 | $81.73 | $775,781 | 123,467 Direct | -7.14% | Disposed | 94.3% (price as of 2026-10-05) |
| Oct. 27, 2015 | POOL | M | 20,000 | $38.79 | $775,800 | 132,959 Direct | +17.71% | Acquired | 309.3% (price as of 2026-10-05) |
| Feb. 28, 2015 | POOL | F | 3,021 | $69.17 | $208,963 | 112,953 Direct | -2.60% | Disposed | 129.5% (price as of 2026-10-05) |
| Feb. 26, 2015 | POOL | A | 10,000 | · | · | 115,974 Direct | +9.44% | Acquired | (price as of 2026-10-05) |
| Feb. 23, 2015 | POOL | F | 3,754 | $69.45 | $260,715 | 105,974 Direct | -3.42% | Disposed | 128.6% (price as of 2026-10-05) |
| Jan. 5, 2015 | POOL | M | 22,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Jan. 5, 2015 | POOL | F | 3,157 | $63.08 | $199,144 | 109,722 Direct | -2.80% | Disposed | 151.7% (price as of 2026-10-05) |
| Jan. 5, 2015 | POOL | F | 11,239 | $63.08 | $708,956 | 112,879 Direct | -9.06% | Disposed | 151.7% (price as of 2026-10-05) |
| Jan. 5, 2015 | POOL | M | 22,500 | $31.51 | $708,975 | 124,118 Direct | +22.14% | Acquired | 403.9% (price as of 2026-10-05) |
| Aug. 6, 2014 | POOL | M | 11,250 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Aug. 6, 2014 | POOL | S | 7,992 | $55.40 | $442,757 | 101,618 Direct | -7.29% | Disposed | 186.6% (price as of 2026-10-05) |
| Aug. 6, 2014 | POOL | M | 11,250 | $26.65 | $299,812 | 109,610 Direct | +11.44% | Acquired | 495.8% (price as of 2026-10-05) |
| March 2, 2014 | POOL | F | 3,887 | $58.46 | $227,234 | 98,353 Direct | -3.80% | Disposed | 171.6% (price as of 2026-10-05) |
| Feb. 27, 2014 | POOL | A | 10,000 | · | · | 102,240 Direct | +10.84% | Acquired | (price as of 2026-10-05) |
| July 29, 2013 | POOL | M | 3,750 | · | · | 11,250 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| July 29, 2013 | POOL | M | 3,750 | · | · | 15,000 Direct | -20.00% | Disposed | (price as of 2026-10-05) |
| July 29, 2013 | POOL | M | 3,750 | · | · | 18,750 Direct | -16.67% | Disposed | (price as of 2026-10-05) |
| July 29, 2013 | POOL | S | 3,750 | $52.86 | $198,225 | 91,772 Direct | -3.93% | Disposed | 200.4% (price as of 2026-10-05) |
| July 29, 2013 | POOL | M | 3,750 | $26.65 | $99,938 | 95,522 Direct | +4.09% | Acquired | 495.8% (price as of 2026-10-05) |
| July 29, 2013 | POOL | S | 3,750 | $52.86 | $198,225 | 91,772 Direct | -3.93% | Disposed | 200.4% (price as of 2026-10-05) |
| July 29, 2013 | POOL | M | 3,750 | $26.65 | $99,938 | 95,522 Direct | +4.09% | Acquired | 495.8% (price as of 2026-10-05) |
| July 29, 2013 | POOL | S | 3,750 | $52.86 | $198,225 | 91,772 Direct | -3.93% | Disposed | 200.4% (price as of 2026-10-05) |
| July 29, 2013 | POOL | M | 3,750 | $26.65 | $99,938 | 95,522 Direct | +4.09% | Acquired | 495.8% (price as of 2026-10-05) |
| Feb. 27, 2013 | POOL | A | 12,000 | · | · | 91,772 Direct | +15.04% | Acquired | (price as of 2026-10-05) |
| Feb. 28, 2012 | POOL | A | 14,400 | · | · | 79,752 Direct | +22.03% | Acquired | (price as of 2026-10-05) |
| March 2, 2011 | POOL | A | 20,800 | · | · | 65,339 Direct | +46.70% | Acquired | (price as of 2026-10-05) |
| Feb. 23, 2010 | POOL | A | 20,800 | · | · | 44,539 Direct | +87.62% | Acquired | (price as of 2026-10-05) |
| May 5, 2009 | POOL | A | 39,000 | · | · | 39,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 5, 2009 | POOL | A | 5,200 | · | · | 23,739 Direct | +28.05% | Acquired | (price as of 2026-10-05) |
| Feb. 26, 2008 | POOL | A | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 8, 2007 | POOL | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-05) |
| May 8, 2007 | POOL | A | 5,000 | · | · | 17,510 Direct | +39.97% | Acquired | (price as of 2026-10-05) |
| June 8, 2006 | POOL | P | 2,500 | $40.50 | $101,250 | 12,500 Direct | +25.00% | Acquired | 292.0% (price as of 2026-10-05) |
| June 7, 2006 | POOL | P | 2,500 | $41.50 | $103,750 | 10,000 Direct | +33.33% | Acquired | 282.6% (price as of 2026-10-05) |
| Feb. 8, 2006 | POOL | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2005 | POOL | A | 22,500 | · | · | 22,500 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 9, 2004 | POOL | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-05) |
Showing latest 100 of 102 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 5, 2019 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $18.44 | May 5, 2019 | 13,000 | Disposed |
| Aug. 22, 2018 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $18.44 | May 5, 2019 | 5,473 | Disposed |
| Aug. 21, 2018 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $18.44 | May 5, 2019 | 7,527 | Disposed |
| May 11, 2018 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $18.44 | May 5, 2019 | 13,000 | Disposed |
| Feb. 22, 2018 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $20.34 | Feb. 26, 2018 | 40,000 | Disposed |
| March 1, 2017 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $37.85 | May 8, 2017 | 4,968 | Disposed |
| Feb. 27, 2017 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $37.85 | May 8, 2017 | 1,932 | Disposed |
| Feb. 21, 2017 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $37.85 | May 8, 2017 | 600 | Disposed |
| July 26, 2016 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $37.85 | May 8, 2017 | 7,500 | Disposed |
| Oct. 27, 2015 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $38.79 | Feb. 8, 2016 | 20,000 | Disposed |
| Jan. 5, 2015 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $31.51 | Feb. 14, 2015 | 22,500 | Disposed |
| Aug. 6, 2014 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $26.65 | Aug. 9, 2014 | 11,250 | Disposed |
| July 29, 2013 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $26.65 | Aug. 9, 2014 | 3,750 | Disposed |
| July 29, 2013 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $26.65 | Aug. 9, 2014 | 3,750 | Disposed |
| July 29, 2013 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $26.65 | Aug. 9, 2014 | 3,750 | Disposed |
| May 5, 2009 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $18.44 | May 5, 2019 | 39,000 | Acquired |
| Feb. 26, 2008 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $20.34 | Feb. 26, 2018 | 40,000 | Acquired |
| May 8, 2007 | POOL | Non-Qualified Stock Option (right to buy) | Common Stock | $37.85 | May 8, 2017 | 15,000 | Acquired |
| Feb. 8, 2006 | POOL | Employee Stock Option (Right to Buy) | Common Stock | $38.79 | Feb. 8, 2016 | 20,000 | Acquired |
| Feb. 14, 2005 | POOL | Employee Stock Option (Right to Buy) | Common Stock | $31.51 | Feb. 14, 2015 | 22,500 | Acquired |
| Aug. 9, 2004 | POOL | Employee Stock Option (Right to Buy) | Common Stock | · | Aug. 9, 2014 | 15,000 | Acquired |
| Aug. 9, 2004 | POOL | Employee Stock Option (Right to Buy) | Common Stock | $39.81 | Aug. 9, 2014 | 15,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 11, 2004 | POOL | Common Stock | 0 | Direct |