John Oyler
CIK 1042047 · View on SEC EDGAR ↗
Insider
First SEC filing: June 10, 2026 · Latest: June 10, 2026
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
126 sells (S)
Net:
$-336,937,240
+ 21 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
21 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 12, 2026 | ONC | S 10b5-1 | 1,980 | $354.71 | $702,326 | 52,912 Direct | -3.61% | Disposed | 5.1% (price as of 2026-08-20) |
| Aug. 12, 2026 | ONC | S 10b5-1 | 2,515 | $356.43 | $896,421 | 50,397 Direct | -4.75% | Disposed | 4.6% (price as of 2026-08-20) |
| Aug. 12, 2026 | ONC | S 10b5-1 | 15,396 | $357.63 | $5,506,071 | 35,001 Direct | -30.55% | Disposed | 4.3% (price as of 2026-08-20) |
| Aug. 12, 2026 | ONC | S 10b5-1 | 20,899 | $358.41 | $7,490,411 | 14,102 Direct | -59.71% | Disposed | 4.0% (price as of 2026-08-20) |
| Aug. 12, 2026 | ONC | S 10b5-1 | 14,102 | $359.12 | $5,064,310 | 0 Direct | -100.00% | Disposed | 3.8% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 13,695 | $359.32 | $4,920,887 | 112,104 Direct | -10.89% | Disposed | 3.8% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 8,081 | $360.33 | $2,911,827 | 104,023 Direct | -7.21% | Disposed | 3.5% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 14,569 | $361.47 | $5,266,256 | 89,454 Direct | -14.01% | Disposed | 3.1% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 11,568 | $362.34 | $4,191,549 | 77,886 Direct | -12.93% | Disposed | 2.9% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 13,403 | $363.45 | $4,871,320 | 64,483 Direct | -17.21% | Disposed | 2.6% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 5,211 | $364.31 | $1,898,419 | 59,272 Direct | -8.08% | Disposed | 2.3% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 3,176 | $365.26 | $1,160,066 | 56,096 Direct | -5.36% | Disposed | 2.1% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 1,200 | $366.31 | $439,572 | 54,896 Direct | -2.14% | Disposed | 1.8% (price as of 2026-08-20) |
| Aug. 11, 2026 | ONC | S 10b5-1 | 4 | $367.00 | $1,468 | 54,892 Direct | -0.01% | Disposed | 1.6% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 67 | $350.00 | $23,450 | 240,743 Direct | -0.03% | Disposed | 6.5% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 2,813 | $351.80 | $989,613 | 237,930 Direct | -1.17% | Disposed | 6.0% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 3,673 | $353.32 | $1,297,744 | 234,257 Direct | -1.54% | Disposed | 5.5% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 6,717 | $354.78 | $2,383,057 | 227,540 Direct | -2.87% | Disposed | 5.1% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 3,476 | $355.66 | $1,236,274 | 224,064 Direct | -1.53% | Disposed | 4.8% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 12,418 | $356.62 | $4,428,507 | 211,646 Direct | -5.54% | Disposed | 4.5% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 15,869 | $357.67 | $5,675,865 | 195,777 Direct | -7.50% | Disposed | 4.2% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 45,044 | $358.70 | $16,157,283 | 150,733 Direct | -23.01% | Disposed | 3.9% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 21,254 | $359.50 | $7,640,813 | 129,479 Direct | -14.10% | Disposed | 3.7% (price as of 2026-08-20) |
| Aug. 10, 2026 | ONC | S 10b5-1 | 3,680 | $360.63 | $1,327,118 | 125,799 Direct | -2.84% | Disposed | 3.4% (price as of 2026-08-20) |
| July 21, 2026 | ONC | S 10b5-1 | 2,340 | $320.06 | $748,940 | 0 Direct | -100.00% | Disposed | 16.5% (price as of 2026-08-20) |
| July 21, 2026 | ONC | S 10b5-1 | 15,807 | $319.29 | $5,047,017 | 2,340 Direct | -87.11% | Disposed | 16.8% (price as of 2026-08-20) |
| July 21, 2026 | ONC | S 10b5-1 | 7,842 | $318.41 | $2,496,971 | 18,147 Direct | -30.17% | Disposed | 17.1% (price as of 2026-08-20) |
| July 21, 2026 | ONC | S 10b5-1 | 20,029 | $316.91 | $6,347,390 | 25,989 Direct | -43.52% | Disposed | 17.6% (price as of 2026-08-20) |
| July 21, 2026 | ONC | S 10b5-1 | 15,379 | $316.26 | $4,863,763 | 46,018 Direct | -25.05% | Disposed | 17.9% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 280 | $318.30 | $89,124 | 0 Direct | -100.00% | Disposed | 17.1% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 523 | $316.14 | $165,341 | 280 Direct | -65.13% | Disposed | 17.9% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 1,512 | $315.26 | $476,673 | 803 Direct | -65.31% | Disposed | 18.3% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 1,850 | $313.91 | $580,734 | 2,315 Direct | -44.42% | Disposed | 18.8% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 14,326 | $312.96 | $4,483,465 | 4,165 Direct | -77.48% | Disposed | 19.1% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 15,499 | $312.29 | $4,840,183 | 18,491 Direct | -45.60% | Disposed | 19.4% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 2,907 | $311.80 | $906,403 | 0 Direct | -100.00% | Disposed | 19.6% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 6,273 | $310.75 | $1,949,335 | 2,907 Direct | -68.33% | Disposed | 20.0% (price as of 2026-08-20) |
| July 20, 2026 | ONC | S 10b5-1 | 5,146 | $310.08 | $1,595,672 | 9,180 Direct | -35.92% | Disposed | 20.2% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 51 | $315.06 | $16,068 | 0 Direct | -100.00% | Disposed | 18.3% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 740 | $314.32 | $232,597 | 51 Direct | -93.55% | Disposed | 18.6% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 14,915 | $313.19 | $4,671,229 | 791 Direct | -94.96% | Disposed | 19.0% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 35,829 | $312.17 | $11,184,739 | 15,706 Direct | -69.52% | Disposed | 19.4% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 5,543 | $311.42 | $1,726,201 | 51,535 Direct | -9.71% | Disposed | 19.7% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 4,833 | $310.37 | $1,500,018 | 57,078 Direct | -7.81% | Disposed | 20.1% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 680 | $309.05 | $210,154 | 61,911 Direct | -1.09% | Disposed | 20.6% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 597 | $306.96 | $183,255 | 62,591 Direct | -0.94% | Disposed | 21.5% (price as of 2026-08-20) |
| July 17, 2026 | ONC | S 10b5-1 | 1,440 | $305.20 | $439,488 | 63,188 Direct | -2.23% | Disposed | 22.2% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 520 | $323.59 | $168,267 | 0 Direct | -100.00% | Disposed | 15.2% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 1,560 | $322.71 | $503,428 | 520 Direct | -75.00% | Disposed | 15.5% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 13,109 | $321.61 | $4,215,985 | 2,080 Direct | -86.31% | Disposed | 15.9% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 20,505 | $321.00 | $6,582,105 | 15,189 Direct | -57.45% | Disposed | 16.1% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 15,097 | $319.99 | $4,830,889 | 35,694 Direct | -29.72% | Disposed | 16.5% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 6,402 | $318.55 | $2,039,357 | 50,791 Direct | -11.19% | Disposed | 17.0% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 42,798 | $317.79 | $13,600,776 | 57,193 Direct | -42.80% | Disposed | 17.3% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 32,224 | $316.82 | $10,209,208 | 99,991 Direct | -24.37% | Disposed | 17.7% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 19,752 | $316.00 | $6,241,632 | 132,215 Direct | -13.00% | Disposed | 18.0% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 9,516 | $314.73 | $2,994,971 | 151,967 Direct | -5.89% | Disposed | 18.5% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 4,881 | $314.08 | $1,533,024 | 161,483 Direct | -2.93% | Disposed | 18.7% (price as of 2026-08-20) |
| July 16, 2026 | ONC | S 10b5-1 | 233 | $311.98 | $72,691 | 166,364 Direct | -0.14% | Disposed | 19.5% (price as of 2026-08-20) |
| July 15, 2026 | ONC | S 10b5-1 | 7,640 | $313.58 | $2,395,751 | 0 Direct | -100.00% | Disposed | 18.9% (price as of 2026-08-20) |
| July 15, 2026 | ONC | S 10b5-1 | 48,657 | $312.86 | $15,222,829 | 7,640 Direct | -86.43% | Disposed | 19.2% (price as of 2026-08-20) |
| July 15, 2026 | ONC | S 10b5-1 | 12,857 | $311.71 | $4,007,655 | 56,297 Direct | -18.59% | Disposed | 19.6% (price as of 2026-08-20) |
| July 15, 2026 | ONC | S 10b5-1 | 41,336 | $310.92 | $12,852,189 | 69,154 Direct | -37.41% | Disposed | 19.9% (price as of 2026-08-20) |
| July 15, 2026 | ONC | S 10b5-1 | 6,067 | $310.02 | $1,880,891 | 110,490 Direct | -5.21% | Disposed | 20.3% (price as of 2026-08-20) |
| July 14, 2026 | ONC | S 10b5-1 | 7,834 | $307.57 | $2,409,503 | 0 Direct | -100.00% | Disposed | 21.2% (price as of 2026-08-20) |
| July 14, 2026 | ONC | S 10b5-1 | 40,781 | $306.93 | $12,516,912 | 7,834 Direct | -83.89% | Disposed | 21.5% (price as of 2026-08-20) |
| July 14, 2026 | ONC | S 10b5-1 | 45,895 | $306.21 | $14,053,508 | 48,615 Direct | -48.56% | Disposed | 21.8% (price as of 2026-08-20) |
| July 14, 2026 | ONC | S 10b5-1 | 39,090 | $305.02 | $11,923,232 | 94,510 Direct | -29.26% | Disposed | 22.2% (price as of 2026-08-20) |
| July 14, 2026 | ONC | S 10b5-1 | 8,122 | $303.93 | $2,468,519 | 0 Direct | -100.00% | Disposed | 22.7% (price as of 2026-08-20) |
| July 14, 2026 | ONC | S 10b5-1 | 4,139 | $303.07 | $1,254,407 | 8,122 Direct | -33.76% | Disposed | 23.0% (price as of 2026-08-20) |
| July 13, 2026 | ONC | S 10b5-1 | 320 | $307.40 | $98,368 | 0 Direct | -100.00% | Disposed | 21.3% (price as of 2026-08-20) |
| July 13, 2026 | ONC | S 10b5-1 | 7,240 | $306.82 | $2,221,377 | 320 Direct | -95.77% | Disposed | 21.5% (price as of 2026-08-20) |
| July 13, 2026 | ONC | S 10b5-1 | 846 | $305.57 | $258,512 | 7,560 Direct | -10.06% | Disposed | 22.0% (price as of 2026-08-20) |
| July 13, 2026 | ONC | S 10b5-1 | 8,438 | $304.68 | $2,570,890 | 8,406 Direct | -50.09% | Disposed | 22.4% (price as of 2026-08-20) |
| July 13, 2026 | ONC | S 10b5-1 | 26,294 | $303.83 | $7,988,906 | 16,844 Direct | -60.95% | Disposed | 22.7% (price as of 2026-08-20) |
| July 13, 2026 | ONC | S 10b5-1 | 4,584 | $302.79 | $1,387,989 | 43,138 Direct | -9.61% | Disposed | 23.1% (price as of 2026-08-20) |
| July 13, 2026 | ONC | S 10b5-1 | 798 | $301.94 | $240,948 | 47,722 Direct | -1.64% | Disposed | 23.5% (price as of 2026-08-20) |
| July 10, 2026 | ONC | S 10b5-1 | 18 | $303.03 | $5,455 | 0 Direct | -100.00% | Disposed | 23.0% (price as of 2026-08-20) |
| July 10, 2026 | ONC | S 10b5-1 | 136 | $302.19 | $41,098 | 18 Direct | -88.31% | Disposed | 23.4% (price as of 2026-08-20) |
Showing latest 100 of 252 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 |
|---|---|---|---|---|---|---|---|
| July 20, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (441,870) | — | June 4, 2029 | 441,870 | Disposed |
| July 17, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (840,164) | — | June 4, 2029 | 840,164 | Disposed |
| July 16, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (911,248) | — | June 4, 2029 | 911,248 | Disposed |
| July 16, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (1,254,513) | — | June 25, 2028 | 1,254,513 | Disposed |
| July 15, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (55,575) | — | June 25, 2028 | 55,575 | Disposed |
| July 15, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (996,801) | — | April 29, 2028 | 996,801 | Disposed |
| July 15, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (462,865) | — | Sept. 26, 2027 | 462,865 | Disposed |
| July 14, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (472,134) | — | Sept. 26, 2027 | 472,134 | Disposed |
| July 14, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (1,264,666) | — | Nov. 15, 2026 | 1,264,666 | Disposed |
| July 13, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (630,760) | — | Nov. 15, 2026 | 630,760 | Disposed |
| July 10, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (152,074) | — | Nov. 15, 2026 | 152,074 | Disposed |
| June 11, 2026 | ONC | Share Option (Right to Buy) | Ordinary Shares (344,669) | — | June 10, 2036 | 344,669 | Acquired |
| June 26, 2018 | ONC | Share Option (Right to Buy) | Ordinary Shares | — | June 25, 2028 | 1,310,088 | Acquired |
| April 30, 2018 | ONC | Share Option (Right to Buy) | Ordinary Shares | — | April 29, 2028 | 996,810 | Acquired |
| Sept. 27, 2017 | ONC | Share Option (Right to Buy) | Ordinary Shares | — | Sept. 26, 2027 | 935,000 | Acquired |
| Nov. 16, 2016 | ONC | Share Option (Right to buy) | Ordinary Shares | — | Nov. 15, 2026 | 2,047,500 | Acquired |
| Feb. 8, 2016 | ONC | Series A Preferred Shares | Ordinary Shares (9,398,380) | — | — | 9,398,380 | Disposed |
| Feb. 8, 2016 | ONC | Series A Preferred Shares | Series A Preferred Shares (57,777) | — | — | 57,777 | Acquired |
| Feb. 8, 2016 | ONC | Series A Warrant (Right to Buy) | Series A Preferred Shares (57,777) | $0.68 | — | 57,777 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 7 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 2, 2016 | ONC | Ordinary Shares | 50,381,969 | Direct |
| Feb. 2, 2016 | ONC | Ordinary Shares | 10,000,000 | Indirect |
| Feb. 2, 2016 | ONC | Ordinary Shares | 102,188 | Indirect |
| Feb. 2, 2016 | ONC | Ordinary Shares | 8,000,000 | Indirect |
| Feb. 2, 2016 | ONC | Series A Warrant (Right to Buy)→ Series A Preferred Shares (57,777) | 57,777 | Direct |
| Feb. 2, 2016 | ONC | Series A Preferred Shares→ Ordinary Shares | — | Direct |
| Feb. 2, 2016 | ONC | Share Option (Right to Buy)→ Ordinary Shares (11,400,500) | 11,400,500 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
ONC
CEO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $1,133,000 | — | — | — | $1,676,840 | — | $133,829 | $17,943,521 |
| 2024 | $1,100,000 | — | — | — | $1,540,000 | — | $196,747 | $20,836,439 |
| 2023 | $871,000 | — | — | — | $1,132,300 | — | $403,692 | $18,906,830 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.