Michael Stubblefield
Insider
First SEC filing: May 16, 2019 · Latest: May 16, 2019
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 |
|---|---|---|---|---|---|---|---|---|---|
| May 21, 2025 | AVTR | G | 76,000 | · | · | 1,219,013 Direct | -5.87% | Disposed | (price as of 2026-10-02) |
| May 21, 2025 | AVTR | G | 76,000 | · | · | 545,500 Indirect | +16.19% | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2025 | AVTR | F | 4,969 | $17.56 | $87,256 | 1,448,022 Direct | -0.34% | Disposed | -12.6% (price as of 2026-10-02) |
| Feb. 24, 2025 | AVTR | F | 6,800 | $17.47 | $118,796 | 1,452,991 Direct | -0.47% | Disposed | -12.2% (price as of 2026-10-02) |
| Feb. 23, 2025 | AVTR | F | 14,674 | $17.30 | $253,860 | 1,459,791 Direct | -1.00% | Disposed | -11.3% (price as of 2026-10-02) |
| Feb. 20, 2025 | AVTR | A | 157,232 | · | · | 1,474,465 Direct | +11.94% | Acquired | (price as of 2026-10-02) |
| Feb. 20, 2025 | AVTR | A | 380,886 | · | · | 380,886 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2024 | AVTR | F | 7,685 | $24.35 | $187,130 | 1,111,751 Direct | -0.69% | Disposed | -37.0% (price as of 2026-10-02) |
| Feb. 24, 2024 | AVTR | F | 9,595 | $24.35 | $233,638 | 1,119,436 Direct | -0.85% | Disposed | -37.0% (price as of 2026-10-02) |
| Feb. 23, 2024 | AVTR | A | 107,802 | · | · | 1,219,553 Direct | +9.70% | Acquired | (price as of 2026-10-02) |
| Feb. 23, 2024 | AVTR | A | 263,558 | · | · | 263,558 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 23, 2024 | AVTR | F | 7,422 | $24.35 | $180,726 | 1,129,031 Direct | -0.65% | Disposed | -37.0% (price as of 2026-10-02) |
| Feb. 22, 2024 | AVTR | A | 99,075 | · | · | 1,177,630 Direct | +9.19% | Acquired | (price as of 2026-10-02) |
| Feb. 22, 2024 | AVTR | F | 41,177 | $24.59 | $1,012,542 | 1,136,453 Direct | -3.50% | Disposed | -37.6% (price as of 2026-10-02) |
| Feb. 20, 2024 | AVTR | F | 9,711 | $24.05 | $233,550 | 1,078,555 Direct | -0.89% | Disposed | -36.2% (price as of 2026-10-02) |
| Aug. 5, 2023 | IR | M | 1,857 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 5, 2023 | IR | M | 1,857 | · | · | 1,857 Direct | · | Acquired | (price as of 2026-10-02) |
| May 26, 2023 | AVTR | G | 40,000 | · | · | 1,032,937 Direct | -3.73% | Disposed | (price as of 2026-10-02) |
| May 26, 2023 | AVTR | G | 40,000 | · | · | 469,500 Indirect | +9.31% | Acquired | (price as of 2026-10-02) |
| May 17, 2023 | AVTR | F | 106,200 | $20.28 | $2,153,736 | 1,172,937 Direct | -8.30% | Disposed | -24.4% (price as of 2026-10-02) |
| Feb. 25, 2023 | AVTR | F | 7,685 | $24.62 | $189,205 | 1,279,137 Direct | -0.60% | Disposed | -37.7% (price as of 2026-10-02) |
| Feb. 24, 2023 | AVTR | A | 99,004 | · | · | 1,286,822 Direct | +8.33% | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2023 | AVTR | A | 239,915 | · | · | 239,915 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 23, 2023 | AVTR | F | 7,422 | $24.59 | $182,507 | 1,187,818 Direct | -0.62% | Disposed | -37.6% (price as of 2026-10-02) |
| Feb. 23, 2023 | IR | A | 3,195 | · | · | 3,195 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 20, 2023 | AVTR | F | 15,026 | $24.54 | $368,738 | 1,195,240 Direct | -1.24% | Disposed | -37.5% (price as of 2026-10-02) |
| Jan. 31, 2023 | AVTR | A | 223,482 | · | · | 1,301,406 Direct | +20.73% | Acquired | (price as of 2026-10-02) |
| Jan. 31, 2023 | AVTR | F | 91,140 | $23.90 | $2,178,246 | 1,210,266 Direct | -7.00% | Disposed | -35.8% (price as of 2026-10-02) |
| Nov. 16, 2022 | AVTR | P | 15,000 | $20.95 | $314,250 | 429,500 Indirect | +3.62% | Acquired | -26.8% (price as of 2026-10-02) |
| Aug. 5, 2022 | IR | A | 1,857 | · | · | 1,857 Direct | · | Acquired | (price as of 2026-10-02) |
| May 17, 2022 | AVTR | F | 108,700 | $31.33 | $3,405,571 | 1,189,841 Direct | -8.37% | Disposed | -51.0% (price as of 2026-10-02) |
| May 4, 2022 | AVTR | G | 14,500 | · | · | 1,298,541 Direct | -1.10% | Disposed | (price as of 2026-10-02) |
| May 4, 2022 | AVTR | G | 14,500 | · | · | 414,500 Indirect | +3.62% | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2022 | AVTR | F | 7,866 | $35.39 | $278,378 | 1,313,041 Direct | -0.60% | Disposed | -56.7% (price as of 2026-10-02) |
| Feb. 23, 2022 | AVTR | A | 69,885 | · | · | 1,320,907 Direct | +5.59% | Acquired | (price as of 2026-10-02) |
| Feb. 23, 2022 | AVTR | A | 202,143 | · | · | 202,143 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 20, 2022 | AVTR | F | 10,959 | $34.00 | $372,606 | 1,251,022 Direct | -0.87% | Disposed | -54.9% (price as of 2026-10-02) |
| Sept. 20, 2021 | AVTR | S 10b5-1 | 141,300 | $42.37 | $5,986,881 | 1,261,981 Direct | -10.07% | Disposed | -63.8% (price as of 2026-10-02) |
| June 10, 2021 | AVTR | M | 57,375 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| June 10, 2021 | AVTR | M | 42,512 | $3.13 | $133,063 | 1,445,793 Direct | +3.03% | Acquired | 390.1% (price as of 2026-10-02) |
| June 10, 2021 | AVTR | S 10b5-1 | 42,512 | $32.48 | $1,380,790 | 1,403,281 Direct | -2.94% | Disposed | -52.8% (price as of 2026-10-02) |
| June 10, 2021 | AVTR | M | 57,375 | $4.19 | $240,401 | 1,460,656 Direct | +4.09% | Acquired | 266.1% (price as of 2026-10-02) |
| June 10, 2021 | AVTR | S 10b5-1 | 57,375 | $32.48 | $1,863,540 | 1,403,281 Direct | -3.93% | Disposed | -52.8% (price as of 2026-10-02) |
| June 10, 2021 | AVTR | M | 42,512 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| June 9, 2021 | AVTR | M | 235,170 | $3.13 | $736,082 | 1,638,451 Direct | +16.76% | Acquired | 390.1% (price as of 2026-10-02) |
| June 9, 2021 | AVTR | S 10b5-1 | 235,170 | $32.03 | $7,532,495 | 1,403,281 Direct | -14.35% | Disposed | -52.1% (price as of 2026-10-02) |
| June 9, 2021 | AVTR | M | 235,170 | · | · | 42,512 Direct | -84.69% | Disposed | (price as of 2026-10-02) |
| June 8, 2021 | AVTR | M | 152,643 | $3.13 | $477,773 | 1,555,924 Direct | +10.88% | Acquired | 390.1% (price as of 2026-10-02) |
| June 8, 2021 | AVTR | S 10b5-1 | 152,643 | $32.04 | $4,890,682 | 1,403,281 Direct | -9.81% | Disposed | -52.1% (price as of 2026-10-02) |
| June 8, 2021 | AVTR | M | 152,643 | · | · | 277,682 Direct | -35.47% | Disposed | (price as of 2026-10-02) |
| May 17, 2021 | AVTR | F | 106,200 | $30.90 | $3,281,580 | 1,403,281 Direct | -7.04% | Disposed | -50.4% (price as of 2026-10-02) |
| Feb. 25, 2021 | AVTR | A | 72,359 | · | · | 1,509,481 Direct | +5.03% | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2021 | AVTR | A | 234,192 | · | · | 234,192 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 22, 2021 | AVTR | F | 10,141 | $28.69 | $290,945 | 1,437,122 Direct | -0.70% | Disposed | -46.5% (price as of 2026-10-02) |
| Dec. 11, 2020 | AVTR | G | 400,000 | · | · | 1,447,265 Direct | -21.65% | Disposed | (price as of 2026-10-02) |
| Dec. 11, 2020 | AVTR | G | 400,000 | · | · | 400,000 Indirect | · | Acquired | (price as of 2026-10-02) |
| Dec. 7, 2020 | AVTR | M 10b5-1 | 210,369 | $1.60 | $336,590 | 1,945,717 Direct | +12.12% | Acquired | 858.8% (price as of 2026-10-02) |
| Dec. 7, 2020 | AVTR | S | 98,452 | $27.45 | $2,702,507 | 1,847,265 Direct | -5.06% | Disposed | -44.1% (price as of 2026-10-02) |
| Dec. 7, 2020 | AVTR | M 10b5-1 | 201,369 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 4, 2020 | AVTR | M 10b5-1 | 880,601 | $1.60 | $1,408,962 | 2,147,536 Direct | +69.51% | Acquired | 858.8% (price as of 2026-10-02) |
| Dec. 4, 2020 | AVTR | S | 412,188 | $27.08 | $11,162,051 | 1,735,348 Direct | -19.19% | Disposed | -43.4% (price as of 2026-10-02) |
| Dec. 4, 2020 | AVTR | M 10b5-1 | 880,601 | · | · | 201,369 Direct | -81.39% | Disposed | (price as of 2026-10-02) |
| May 17, 2020 | AVTR | F | 108,700 | $17.86 | $1,941,382 | 1,266,935 Direct | -7.90% | Disposed | -14.1% (price as of 2026-10-02) |
| March 12, 2020 | AVTR | M | 200,000 | $1.60 | $320,000 | 1,375,635 Direct | +17.01% | Acquired | 858.8% (price as of 2026-10-02) |
| March 12, 2020 | AVTR | M | 200,000 | · | · | 1,090,970 Direct | -15.49% | Disposed | (price as of 2026-10-02) |
| Feb. 21, 2020 | AVTR | A | 141,483 | · | · | 1,175,635 Direct | +13.68% | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2020 | AVTR | A | 456,204 | · | · | 456,204 Direct | · | Acquired | (price as of 2026-10-02) |
| May 21, 2019 | AVTR | A | 1,000,000 | · | · | 1,034,150 Direct | +2928.26% | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 20, 2025 | AVTR | Stock Options (Right to Buy) | Common Stock | $17.49 | Feb. 20, 2035 | 380,886 | Acquired |
| Feb. 23, 2024 | AVTR | Stock Options (Right to Buy) | Common Stock | $24.35 | Feb. 24, 2034 | 263,558 | Acquired |
| Aug. 5, 2023 | IR | Restricted Stock Units | Common Stock | · | · | 1,857 | Disposed |
| Feb. 24, 2023 | AVTR | Stock Options (Right to Buy) | Common Stock | $24.62 | Feb. 24, 2033 | 239,915 | Acquired |
| Feb. 23, 2023 | IR | Restricted Stock Units | Common Stock | · | · | 3,195 | Acquired |
| Aug. 5, 2022 | IR | Restricted Stock Units | Common Stock | · | · | 1,857 | Acquired |
| Feb. 23, 2022 | AVTR | Stock Options (Right to Buy) | Common Stock | $33.09 | Feb. 23, 2032 | 202,143 | Acquired |
| June 10, 2021 | AVTR | Common Stock | Common Stock | $4.19 | Jan. 20, 2026 | 57,375 | Disposed |
| June 10, 2021 | AVTR | Stock Options (Right to Buy) | Common Stock | $3.13 | May 12, 2024 | 42,512 | Disposed |
| June 9, 2021 | AVTR | Stock Options (Right to Buy) | Common Stock | $3.13 | May 12, 2024 | 235,170 | Disposed |
| June 8, 2021 | AVTR | Stock Options (Right to Buy) | Common Stock | $3.13 | May 12, 2024 | 152,643 | Disposed |
| Feb. 25, 2021 | AVTR | Stock Options (Right to Buy) | Common Stock | $27.64 | Feb. 25, 2031 | 234,192 | Acquired |
| Dec. 7, 2020 | AVTR | Stock Options (Right to Buy) | Common Stock | $1.60 | May 12, 2024 | 201,369 | Disposed |
| Dec. 4, 2020 | AVTR | Stock Options (Right to Buy) | Common Stock | $1.60 | May 12, 2024 | 880,601 | Disposed |
| March 12, 2020 | AVTR | Stock Options (Right to Buy) | Common Stock | $1.60 | May 12, 2024 | 200,000 | Disposed |
| Feb. 21, 2020 | AVTR | Stock Options (Right to Buy) | Common Stock | $17.67 | Feb. 21, 2030 | 456,204 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| May 16, 2019 | AVTR | Common Stock | 34,152 | Direct |
| May 16, 2019 | AVTR | Stock Options (Right to Buy) | 1,290,970 | Direct |
| May 16, 2019 | AVTR | Stock Options (Right to Buy) | 430,325 | Direct |
| May 16, 2019 | AVTR | Stock Options (Right to Buy) | 57,375 | Direct |
| May 16, 2019 | AVTR | Stock Options (Right to Buy) | 750,000 | Direct |
| May 16, 2019 | AVTR | Stock Options (Right to Buy) | 3,380,200 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2020 | · | · | · | · | · | · | $479,752,593,526,282,304 | · |
| 2019 | $984,308,700,000 | $130,000,130,000 | · | · | $12,822,961,610,000 | · | $593,526,282,311 | $169,952,652,722,311 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.