David G Wagner
Insider
First SEC filing: Aug. 18, 2015 · Latest: Aug. 18, 2016
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 1, 2019 | COHR | M | 1,420 | $19.37 | $27,505 | 59,837 Direct | +2.43% | Acquired | 1622.5% (price as of 2026-10-05) |
| March 1, 2019 | COHR | M | 1,880 | $21.67 | $40,740 | 61,717 Direct | +3.14% | Acquired | 1439.6% (price as of 2026-10-05) |
| March 1, 2019 | COHR | S 10b5-1 | 3,300 | $43.00 | $141,900 | 58,417 Direct | -5.35% | Disposed | 675.9% (price as of 2026-10-05) |
| March 1, 2019 | COHR | M | 1,420 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 1, 2019 | COHR | M | 1,880 | · | · | 11,500 Direct | -14.05% | Disposed | (price as of 2026-10-05) |
| Feb. 28, 2019 | COHR | M | 9,900 | $19.37 | $191,763 | 68,317 Direct | +16.95% | Acquired | 1622.5% (price as of 2026-10-05) |
| Feb. 28, 2019 | COHR | S 10b5-1 | 9,900 | $41.85 | $414,315 | 58,417 Direct | -14.49% | Disposed | 697.2% (price as of 2026-10-05) |
| Feb. 28, 2019 | COHR | M | 9,900 | · | · | 1,420 Direct | -87.46% | Disposed | (price as of 2026-10-05) |
| Jan. 17, 2019 | COHR | M | 2,317 | $18.93 | $43,861 | 60,734 Direct | +3.97% | Acquired | 1662.5% (price as of 2026-10-05) |
| Jan. 17, 2019 | COHR | S 10b5-1 | 2,317 | $33.23 | $76,994 | 58,417 Direct | -3.81% | Disposed | 904.0% (price as of 2026-10-05) |
| Jan. 17, 2019 | COHR | M | 2,317 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Nov. 20, 2018 | COHR | F | 1,961 | $34.49 | $67,635 | 58,417 Direct | -3.25% | Disposed | 867.4% (price as of 2026-10-05) |
| Sept. 25, 2018 | COHR | M | 4,833 | $18.93 | $91,489 | 65,211 Direct | +8.00% | Acquired | 1662.5% (price as of 2026-10-05) |
| Sept. 25, 2018 | COHR | S 10b5-1 | 4,833 | $49.00 | $236,817 | 60,378 Direct | -7.41% | Disposed | 580.9% (price as of 2026-10-05) |
| Sept. 25, 2018 | COHR | M | 4,833 | · | · | 2,317 Direct | -67.59% | Disposed | (price as of 2026-10-05) |
| Sept. 18, 2018 | COHR | M | 200 | $18.93 | $3,786 | 60,578 Direct | +0.33% | Acquired | 1662.5% (price as of 2026-10-05) |
| Sept. 18, 2018 | COHR | S 10b5-1 | 200 | $49.00 | $9,800 | 60,378 Direct | -0.33% | Disposed | 580.9% (price as of 2026-10-05) |
| Sept. 18, 2018 | COHR | M | 200 | · | · | 7,150 Direct | -2.72% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 11,200 | $13.99 | $156,688 | 71,578 Direct | +18.55% | Acquired | 2284.8% (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 2,134 | $12.08 | $25,779 | 73,712 Direct | +2.98% | Acquired | 2661.9% (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 3,900 | $16.86 | $65,754 | 77,612 Direct | +5.29% | Acquired | 1878.9% (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 8,300 | $17.53 | $145,499 | 85,912 Direct | +10.69% | Acquired | 1803.3% (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 7,542 | $17.84 | $134,549 | 93,454 Direct | +8.78% | Acquired | 1770.2% (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | S 10b5-1 | 23,228 | $47.87 | $1,111,924 | 70,226 Direct | -24.86% | Disposed | 597.0% (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | S 10b5-1 | 9,848 | $48.33 | $475,954 | 60,378 Direct | -14.02% | Disposed | 590.3% (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 11,200 | · | · | 2,800 Direct | -80.00% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 2,134 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 3,900 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 8,300 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2018 | COHR | M | 7,542 | · | · | 5,028 Direct | -60.00% | Disposed | (price as of 2026-10-05) |
| Aug. 28, 2018 | COHR | A | 12,726 | · | · | 60,378 Direct | +26.71% | Acquired | (price as of 2026-10-05) |
| Aug. 20, 2018 | COHR | F | 510 | $45.65 | $23,282 | 47,652 Direct | -1.06% | Disposed | 630.9% (price as of 2026-10-05) |
| Aug. 18, 2018 | COHR | F | 276 | $45.65 | $12,599 | 48,162 Direct | -0.57% | Disposed | 630.9% (price as of 2026-10-05) |
| Aug. 15, 2018 | COHR | A | 4,720 | · | · | 49,783 Direct | +10.47% | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2018 | COHR | F | 1,345 | $45.65 | $61,399 | 48,438 Direct | -2.70% | Disposed | 630.9% (price as of 2026-10-05) |
| June 18, 2018 | COHR | F | 3,739 | $46.55 | $174,050 | 45,063 Direct | -7.66% | Disposed | 616.7% (price as of 2026-10-05) |
| May 31, 2018 | COHR | M | 4,446 | $12.80 | $56,909 | 53,248 Direct | +9.11% | Acquired | 2506.6% (price as of 2026-10-05) |
| May 31, 2018 | COHR | M | 2,133 | $12.08 | $25,767 | 55,381 Direct | +4.01% | Acquired | 2661.9% (price as of 2026-10-05) |
| May 31, 2018 | COHR | S 10b5-1 | 6,379 | $44.08 | $281,186 | 49,002 Direct | -11.52% | Disposed | 656.9% (price as of 2026-10-05) |
| May 31, 2018 | COHR | S 10b5-1 | 200 | $44.62 | $8,924 | 48,802 Direct | -0.41% | Disposed | 647.7% (price as of 2026-10-05) |
| May 31, 2018 | COHR | M | 4,446 | · | · | 4,444 Direct | -50.01% | Disposed | (price as of 2026-10-05) |
| May 31, 2018 | COHR | M | 2,133 | · | · | 2,134 Direct | -49.99% | Disposed | (price as of 2026-10-05) |
| Nov. 30, 2017 | COHR | M | 4,444 | $12.80 | $56,883 | 53,246 Direct | +9.11% | Acquired | 2506.6% (price as of 2026-10-05) |
| Nov. 30, 2017 | COHR | M | 2,133 | $12.08 | $25,767 | 55,379 Direct | +4.01% | Acquired | 2661.9% (price as of 2026-10-05) |
| Nov. 30, 2017 | COHR | S 10b5-1 | 6,277 | $47.61 | $298,848 | 49,102 Direct | -11.33% | Disposed | 600.8% (price as of 2026-10-05) |
| Nov. 30, 2017 | COHR | S 10b5-1 | 300 | $48.13 | $14,439 | 48,802 Direct | -0.61% | Disposed | 593.2% (price as of 2026-10-05) |
| Nov. 30, 2017 | COHR | M | 4,444 | · | · | 8,890 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Nov. 30, 2017 | COHR | M | 2,133 | · | · | 4,267 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Aug. 20, 2017 | COHR | F | 563 | $36.60 | $20,606 | 45,898 Direct | -1.21% | Disposed | 811.6% (price as of 2026-10-05) |
| Aug. 18, 2017 | COHR | A | 2,904 | · | · | 48,802 Direct | +6.33% | Acquired | (price as of 2026-10-05) |
| Aug. 18, 2017 | COHR | A | 7,260 | · | · | 7,260 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2017 | COHR | A | 8,203 | · | · | 49,043 Direct | +20.09% | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2017 | COHR | F | 2,582 | $36.60 | $94,501 | 46,461 Direct | -5.26% | Disposed | 811.6% (price as of 2026-10-05) |
| July 10, 2017 | COHR | M | 4,444 | $12.80 | $56,883 | 45,284 Direct | +10.88% | Acquired | 2506.6% (price as of 2026-10-05) |
| July 10, 2017 | COHR | S 10b5-1 | 4,444 | $36.00 | $159,984 | 40,840 Direct | -9.81% | Disposed | 826.8% (price as of 2026-10-05) |
| July 10, 2017 | COHR | M | 4,444 | · | · | 8,890 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| June 20, 2017 | COHR | F | 829 | $34.05 | $28,227 | 40,840 Direct | -1.99% | Disposed | 879.9% (price as of 2026-10-05) |
| Feb. 6, 2017 | COHR | M | 6,666 | $12.80 | $85,325 | 48,335 Direct | +16.00% | Acquired | 2506.6% (price as of 2026-10-05) |
| Feb. 6, 2017 | COHR | S | 6,666 | $36.54 | $243,576 | 41,669 Direct | -13.79% | Disposed | 813.1% (price as of 2026-10-05) |
| Feb. 6, 2017 | COHR | M | 6,666 | · | · | 13,334 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Aug. 20, 2016 | COHR | A | 5,367 | $21.67 | $116,303 | 41,669 Direct | +14.78% | Acquired | 1439.6% (price as of 2026-10-05) |
| Aug. 20, 2016 | COHR | A | 13,380 | · | · | 13,380 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 16, 2016 | COHR | F | 1,256 | $21.34 | $26,803 | 36,302 Direct | -3.34% | Disposed | 1463.4% (price as of 2026-10-05) |
| Aug. 16, 2016 | COHR | A | 3,990 | · | · | 37,558 Direct | +11.89% | Acquired | (price as of 2026-10-05) |
| Nov. 20, 2015 | COHR | A | 4,510 | · | · | 33,568 Direct | +15.52% | Acquired | (price as of 2026-10-05) |
| Aug. 26, 2015 | COHR | F | 1,994 | $17.90 | $35,693 | 29,057 Direct | -6.42% | Disposed | 1763.9% (price as of 2026-10-05) |
| Aug. 15, 2015 | COHR | A | 3,774 | · | · | 31,051 Direct | +13.84% | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2015 | COHR | A | 12,570 | · | · | 12,570 Direct | · | Acquired | (price as of 2026-10-05) |
| June 18, 2015 | COHR | A | 8,600 | · | · | 21,227 Direct | +68.11% | Acquired | (price as of 2026-10-05) |
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 1, 2019 | COHR | Option (Right to Buy) | Common Stock | $19.37 | Aug. 18, 2022 | 1,420 | Disposed |
| March 1, 2019 | COHR | Option (Right to Buy) | Common Stock | $21.67 | Aug. 20, 2026 | 1,880 | Disposed |
| Feb. 28, 2019 | COHR | Option (Right to Buy) | Common Stock | $19.37 | Aug. 18, 2022 | 9,900 | Disposed |
| Jan. 17, 2019 | COHR | Option (Right to Buy) | Common Stock | $18.93 | Aug. 18, 2022 | 2,317 | Disposed |
| Sept. 25, 2018 | COHR | Option (Right to Buy) | Common Stock | $18.93 | Aug. 18, 2022 | 4,833 | Disposed |
| Sept. 18, 2018 | COHR | Option (Right to Buy) | Common Stock | $18.93 | Aug. 18, 2022 | 200 | Disposed |
| Sept. 4, 2018 | COHR | Opiton (Right to Buy) | Common Stock | $13.99 | Aug. 16, 2024 | 11,200 | Disposed |
| Sept. 4, 2018 | COHR | Option (Right to Buy) | Common Stock | $12.08 | Aug. 15, 2019 | 2,134 | Disposed |
| Sept. 4, 2018 | COHR | Option (Right to Buy) | Common Stock | $16.86 | Aug. 21, 2020 | 3,900 | Disposed |
| Sept. 4, 2018 | COHR | Option (Right to Buy) | Common Stock | $17.53 | Aug. 20, 2021 | 8,300 | Disposed |
| Sept. 4, 2018 | COHR | Option (Right to Buy) | Common Stock | $17.84 | Aug. 15, 2025 | 7,542 | Disposed |
| May 31, 2018 | COHR | Option (Right to Buy) | Common Stock | $12.80 | Nov. 10, 2018 | 4,446 | Disposed |
| May 31, 2018 | COHR | Option (Right to Buy) | Common Stock | $12.08 | Aug. 15, 2019 | 2,133 | Disposed |
| Nov. 30, 2017 | COHR | Option (Right to Buy) | Common Stock | $12.80 | Nov. 10, 2018 | 4,444 | Disposed |
| Nov. 30, 2017 | COHR | Option (Right to Buy) | Common Stock | $12.08 | Aug. 15, 2019 | 2,133 | Disposed |
| Aug. 18, 2017 | COHR | Option (Right to Buy) | Common Stock | $35.25 | Aug. 18, 2027 | 7,260 | Acquired |
| July 10, 2017 | COHR | Option (Right to Buy) | Common Stock | $12.80 | Nov. 10, 2018 | 4,444 | Disposed |
| Feb. 6, 2017 | COHR | Option (Right to Buy) | Common Stock | $12.80 | Nov. 10, 2018 | 6,666 | Disposed |
| Aug. 20, 2016 | COHR | Option (Right to Buy) | Common Stock | $21.67 | Aug. 20, 2026 | 13,380 | Acquired |
| Aug. 15, 2015 | COHR | Option (Right to buy) | Common Stock | $17.84 | Aug. 15, 2025 | 12,570 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 10 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 18, 2015 | COHR | Common Stock | · | Direct |
| Aug. 18, 2015 | COHR | Common Stock | · | Indirect |
| Nov. 17, 2014 | COHR | Common Stock | · | Direct |
| Nov. 17, 2014 | COHR | Option (Right to buy) | 14,000 | Direct |
| Nov. 17, 2014 | COHR | Option (Right to buy) | 11,320 | Direct |
| Nov. 17, 2014 | COHR | Option (Right to buy) | 7,350 | Direct |
| Nov. 17, 2014 | COHR | Option (Right to buy) | 8,300 | Direct |
| Nov. 17, 2014 | COHR | Option (Right to buy) | 3,900 | Direct |
| Nov. 17, 2014 | COHR | Option (Right to buy) | 6,400 | Direct |
| Nov. 17, 2014 | COHR | Option (Right to buy) | 20,000 | Direct |