Heather L Mason
CIK 1432601 · View on SEC EDGAR ↗
Insider
First SEC filing: March 18, 2026 · Latest: March 18, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 40 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
40 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 18, 2024 | ASRT | P | 75,000 | $0.80 | $60,000 | 287,650 Direct | +35.27% | Acquired | |
| June 5, 2024 | ASRT | P | 25,000 | $0.97 | $24,250 | 212,650 Direct | +13.32% | Acquired | |
| May 19, 2023 | ASRT | S | 89,286 | $7.30 | $651,788 | 187,650 Direct | -32.24% | Disposed | |
| Feb. 28, 2017 | ABT | S | 100 | $45.01 | $4,501 | 59,677 Direct | -0.17% | Disposed | 155.2% (price as of 2026-08-20) |
| Feb. 28, 2017 | ABT | S | 134 | $45.01 | $6,031 | 59,777 Direct | -0.22% | Disposed | 155.2% (price as of 2026-08-20) |
| Feb. 28, 2017 | ABT | S | 1,678 | $45.02 | $75,544 | 59,911 Direct | -2.72% | Disposed | 155.1% (price as of 2026-08-20) |
| Jan. 31, 2017 | ABT | S | 35,700 | $40.77 | $1,455,489 | 64,489 Direct | -35.63% | Disposed | 181.7% (price as of 2026-08-20) |
| Feb. 29, 2016 | ABT | S | 1,432 | $39.26 | $56,220 | 65,102 Direct | -2.15% | Disposed | 192.6% (price as of 2026-08-20) |
| Feb. 29, 2016 | ABT | S | 1,600 | $39.27 | $62,832 | 66,534 Direct | -2.35% | Disposed | 192.5% (price as of 2026-08-20) |
| April 27, 2015 | ABT | S | 2,695 | $47.46 | $127,905 | 121,489 Direct | -2.17% | Disposed | 142.0% (price as of 2026-08-20) |
| April 27, 2015 | ABT | S | 10,705 | $47.45 | $507,952 | 124,184 Direct | -7.94% | Disposed | 142.1% (price as of 2026-08-20) |
| April 27, 2015 | ABT | S | 100 | $47.45 | $4,745 | 134,889 Direct | -0.07% | Disposed | 142.1% (price as of 2026-08-20) |
| March 3, 2014 | ABT | S | 1,096 | $38.95 | $42,689 | 118,410 Direct | -0.92% | Disposed | 194.9% (price as of 2026-08-20) |
| March 3, 2014 | ABT | S | 1,100 | $38.95 | $42,845 | 119,506 Direct | -0.91% | Disposed | 194.9% (price as of 2026-08-20) |
| June 7, 2013 | ABT | S | 200 | $37.05 | $7,410 | 112,421 Direct | -0.18% | Disposed | 210.0% (price as of 2026-08-20) |
| June 7, 2013 | ABT | S | 1,000 | $37.05 | $37,050 | 112,621 Direct | -0.88% | Disposed | 210.0% (price as of 2026-08-20) |
| June 7, 2013 | ABT | S | 402 | $37.04 | $14,890 | 113,621 Direct | -0.35% | Disposed | 210.1% (price as of 2026-08-20) |
| June 7, 2013 | ABT | S | 1,535 | $37.03 | $56,841 | 114,023 Direct | -1.33% | Disposed | 210.2% (price as of 2026-08-20) |
| June 7, 2013 | ABT | S | 2,102 | $37.02 | $77,816 | 115,558 Direct | -1.79% | Disposed | 210.3% (price as of 2026-08-20) |
| June 7, 2013 | ABT | S | 1,400 | $37.01 | $51,814 | 117,660 Direct | -1.18% | Disposed | 210.4% (price as of 2026-08-20) |
| June 7, 2013 | ABT | S | 5,361 | $37.00 | $198,357 | 119,060 Direct | -4.31% | Disposed | 210.4% (price as of 2026-08-20) |
| Feb. 19, 2013 | ABT | S | 3,066 | $34.79 | $106,666 | 194,172 Direct | -1.55% | Disposed | 230.2% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 6,900 | $66.24 | $457,056 | 182,808 Direct | -3.64% | Disposed | 261.4% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 8,934 | $66.23 | $591,699 | 189,708 Direct | -4.50% | Disposed | 261.5% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.23 | $6,623 | 198,642 Direct | -0.05% | Disposed | 261.5% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 3,900 | $66.22 | $258,258 | 198,742 Direct | -1.92% | Disposed | 261.5% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 5,300 | $66.22 | $350,966 | 202,642 Direct | -2.55% | Disposed | 261.5% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.22 | $6,622 | 207,942 Direct | -0.05% | Disposed | 261.5% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 800 | $66.22 | $52,976 | 208,042 Direct | -0.38% | Disposed | 261.5% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,700 | $66.21 | $112,557 | 208,842 Direct | -0.81% | Disposed | 261.6% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.20 | $6,620 | 210,542 Direct | -0.05% | Disposed | 261.6% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,100 | $66.20 | $72,820 | 210,642 Direct | -0.52% | Disposed | 261.6% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 700 | $66.19 | $46,333 | 211,742 Direct | -0.33% | Disposed | 261.7% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,800 | $66.19 | $119,142 | 212,442 Direct | -0.84% | Disposed | 261.7% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 400 | $66.18 | $26,472 | 214,242 Direct | -0.19% | Disposed | 261.7% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 700 | $66.18 | $46,326 | 214,642 Direct | -0.33% | Disposed | 261.7% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.17 | $6,617 | 215,342 Direct | -0.05% | Disposed | 261.8% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 600 | $66.16 | $39,696 | 215,442 Direct | -0.28% | Disposed | 261.9% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,500 | $66.15 | $99,225 | 216,042 Direct | -0.69% | Disposed | 261.9% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 200 | $66.14 | $13,228 | 217,542 Direct | -0.09% | Disposed | 262.0% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.13 | $6,613 | 217,742 Direct | -0.05% | Disposed | 262.0% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 400 | $66.12 | $26,448 | 217,842 Direct | -0.18% | Disposed | 262.1% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 4,600 | $66.12 | $304,152 | 218,242 Direct | -2.06% | Disposed | 262.1% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.11 | $6,611 | 222,842 Direct | -0.04% | Disposed | 262.1% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,000 | $66.11 | $66,110 | 222,942 Direct | -0.45% | Disposed | 262.1% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 500 | $66.10 | $33,050 | 223,942 Direct | -0.22% | Disposed | 262.2% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,060 | $66.10 | $70,066 | 224,442 Direct | -0.47% | Disposed | 262.2% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 939 | $66.10 | $62,068 | 225,502 Direct | -0.41% | Disposed | 262.2% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,680 | $66.09 | $111,031 | 226,441 Direct | -0.74% | Disposed | 262.2% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 600 | $66.31 | $39,786 | 124,312 Direct | -0.48% | Disposed | 261.0% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 3,800 | $66.30 | $251,940 | 124,912 Direct | -2.95% | Disposed | 261.1% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 700 | $66.29 | $46,403 | 128,712 Direct | -0.54% | Disposed | 261.1% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,400 | $66.33 | $92,862 | 129,412 Direct | -1.07% | Disposed | 260.9% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,000 | $66.32 | $66,320 | 130,812 Direct | -0.76% | Disposed | 261.0% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 1,200 | $66.39 | $79,668 | 131,812 Direct | -0.90% | Disposed | 260.6% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 200 | $66.39 | $13,278 | 133,012 Direct | -0.15% | Disposed | 260.6% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.38 | $6,638 | 133,212 Direct | -0.08% | Disposed | 260.7% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 100 | $66.38 | $6,638 | 133,312 Direct | -0.07% | Disposed | 260.7% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 900 | $66.38 | $59,742 | 133,412 Direct | -0.67% | Disposed | 260.7% (price as of 2026-08-20) |
| Aug. 1, 2012 | ABT | S | 300 | $66.33 | $19,899 | 134,312 Direct | -0.22% | Disposed | 260.9% (price as of 2026-08-20) |
Showing latest 100 of 261 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 |
|---|---|---|---|---|---|---|---|
| June 16, 2026 | IMTX | Stock Option (Right to Buy) | Ordinary Shares (48,000) | $9.09 | June 15, 2036 | 48,000 | Acquired |
| June 16, 2026 | ASRT | Stock Option (Right to Buy) | Common Stock (5,415) | $9.26 | — | 5,415 | Disposed |
| June 16, 2026 | ASRT | Stock Option (Right to Buy) | Common Stock (36,666) | $17.10 | — | 36,666 | Disposed |
| May 7, 2025 | ASRT | Stock Option (right to buy) | Common Stock (81,225) | $0.62 | May 7, 2035 | 81,225 | Acquired |
| Jan. 2, 2024 | ASRT | Stock Option (Right to Buy) | Common Stock (550,000) | $1.14 | Jan. 2, 2034 | 550,000 | Acquired |
| Feb. 17, 2017 | ABT | Option (right to buy) [F2] | Common shares (38,940) | $44.40 | Feb. 16, 2027 | 38,940 | Acquired |
| Jan. 31, 2017 | ABT | Option (right to buy) [F1] | Common shares (35,700) | $25.25 | Feb. 15, 2017 | 35,700 | Disposed |
| Feb. 19, 2016 | ABT | Option (right to buy) [F2] | Common shares (214,041) | $38.40 | Feb. 18, 2026 | 214,041 | Acquired |
| Feb. 20, 2015 | ABT | Option (right to buy) [F2] | Common shares (149,925) | $47.00 | Feb. 19, 2025 | 149,925 | Acquired |
| July 1, 2014 | ABT | Option (right to buy) [F2] | Common shares (24,634) | $41.14 | June 30, 2024 | 24,634 | Acquired |
| Feb. 21, 2014 | ABT | Option (right to buy) [F2] | Common shares (110,107) | $39.12 | Feb. 20, 2024 | 110,107 | Acquired |
| Feb. 15, 2013 | ABT | Option (right to buy) [F2] | Common shares (119,700) | $34.94 | Feb. 14, 2023 | 119,700 | Acquired |
| Aug. 1, 2012 | ABT | Option (right to buy) [F2] | Common shares (27,667) | $51.91 | Feb. 19, 2014 | 27,667 | Disposed |
| Aug. 1, 2012 | ABT | Option (right to buy) [F1] | Common shares (36,000) | $44.16 | Feb. 16, 2016 | 36,000 | Disposed |
| Aug. 1, 2012 | ABT | Option (right to buy) [F1] | Common shares (32,642) | $46.34 | Feb. 17, 2015 | 32,642 | Disposed |
| March 13, 2012 | ABT | Option (right to buy) [F1] | Common shares (5,045) | $56.35 | Feb. 13, 2013 | 5,045 | Disposed |
| March 13, 2012 | ABT | Option (right to buy) [F1] | Common shares (13,516) | $54.62 | Feb. 13, 2013 | 13,516 | Disposed |
| March 13, 2012 | ABT | Option (right to buy) [F1] | Common shares (12,822) | $48.79 | Feb. 13, 2013 | 12,822 | Disposed |
| March 13, 2012 | ABT | Option (right to buy) [F1] | Common shares (962) | $49.38 | Feb. 13, 2013 | 962 | Disposed |
| March 13, 2012 | ABT | Option (right to buy) [F1] | Common shares (7,434) | $55.66 | Feb. 13, 2013 | 7,434 | Disposed |
| Feb. 17, 2012 | ABT | Option (right to buy) [F2] | Common shares (41,200) | $56.26 | Feb. 16, 2022 | 41,200 | Acquired |
| Dec. 29, 2011 | ABT | Option (right to buy) [F1] | Common shares (53,201) | $53.62 | Feb. 14, 2012 | 53,201 | Disposed |
| April 28, 2011 | ABT | Option (right to buy) [F1] | Common shares (10,640) | $52.04 | Dec. 2, 2011 | 10,640 | Disposed |
| Feb. 18, 2011 | ABT | Option (right to buy) [F2] | Common shares (31,200) | $46.60 | Feb. 17, 2021 | 31,200 | Acquired |
| Feb. 19, 2010 | ABT | Common shares without par value [F3] | Common Shares (28,700) | $54.50 | Feb. 18, 2020 | 28,700 | Acquired |
| Nov. 24, 2009 | ABT | Option (right to buy) [F1] | Common shares (1,384) | $53.60 | Feb. 10, 2010 | 1,384 | Disposed |
| Nov. 24, 2009 | ABT | Option (right to buy) [F1] | Common shares (1,384) | $53.60 | Feb. 10, 2010 | 1,384 | Acquired |
| Nov. 11, 2009 | ABT | Option (right to buy) [F1] | Common shares (878) | $53.24 | Feb. 10, 2010 | 878 | Disposed |
| Nov. 11, 2009 | ABT | Option (right to buy) [F1] | Common shares (1,274) | $51.91 | Feb. 10, 2010 | 1,274 | Disposed |
| Feb. 20, 2009 | ABT | Option (right to buy) [F2] | Common Shares (38,700) | $54.14 | Feb. 19, 2019 | 38,700 | Acquired |
| Jan. 28, 2009 | ABT | Option (right to buy) [F1] | Common Shares (8,113) | $53.60 | Feb. 11, 2009 | 8,113 | Disposed |
| July 9, 2008 | ABT | Option (right to buy) [F1] | Common Shares (1,185) | $57.37 | Feb. 8, 2011 | 1,185 | Acquired |
| July 9, 2008 | ABT | Option (right to buy) [F1] | Common Shares (1,355) | $45.45 | Feb. 8, 2011 | 1,355 | Disposed |
| June 2, 2008 | ABT | Option (right to buy) [F1] | Common Shares (5,045) | $56.35 | Feb. 13, 2013 | 5,045 | Acquired |
| June 2, 2008 | ABT | Option (right to buy) [F1] | Common Shares (5,751) | $44.92 | Feb. 13, 2013 | 5,751 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 39 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 18, 2026 | IMTX | Stock Option (Right to Buy)→ Ordinary Shares (25,000) | 25,000 | Direct |
| March 18, 2026 | IMTX | Stock Option (Right to Buy)→ Ordinary Shares (15,000) | 15,000 | Direct |
| March 18, 2026 | IMTX | Stock Option (Right to Buy)→ Ordinary Shares (25,000) | 25,000 | Direct |
| March 18, 2026 | IMTX | Stock Option (Right to Buy)→ Ordinary Shares (25,000) | 25,000 | Direct |
| March 18, 2026 | IMTX | Stock Option (Right to Buy)→ Ordinary Shares (40,000) | 40,000 | Direct |
| March 18, 2026 | IMTX | Stock Option (Right to Buy)→ Ordinary Shares (41,500) | 41,500 | Direct |
| May 5, 2008 | ABT | Common shares without par value | 90,900 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (1,355) | 1,355 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (3,547) | 3,547 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (3,546) | 3,546 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (3,547) | 3,547 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (17,734) | 17,734 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (17,734) | 17,734 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (17,733) | 17,733 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (11,599) | 11,599 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (11,600) | 11,600 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (9,443) | 9,443 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (962) | 962 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (5,751) | 5,751 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (12,000) | 12,000 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (12,000) | 12,000 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (12,000) | 12,000 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (12,822) | 12,822 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (11,900) | 11,900 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (11,900) | 11,900 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (11,900) | 11,900 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (13,516) | 13,516 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (4,366) | 4,366 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (27,667) | 27,667 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (1,274) | 1,274 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (8,113) | 8,113 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (1,384) | 1,384 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (9,370) | 9,370 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (11,300) | 11,300 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (11,300) | 11,300 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F2]→ Common shares (11,300) | 11,300 | Direct |
| May 5, 2008 | ABT | Common shares without par value | 90,900 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (878) | 878 | Direct |
| May 5, 2008 | ABT | Option (right to buy) [F1]→ Common shares (7,434) | 7,434 | Direct |