Nello Mainolfi
CIK 1821189 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 20, 2020 · Latest: Aug. 20, 2020
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)
21 sells (S)
Net:
$-34,875,625
+ 63 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
63 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| July 7, 2026 | KYMR | S 10b5-1 | 50,000 | $119.00 | $5,950,000 | 666,568 Direct | -6.98% | Disposed | 0.8% (price as of 2026-08-18) |
| July 1, 2026 | KYMR | S 10b5-1 | 3,336 | $116.56 | $388,844 | 666,568 Direct | -0.50% | Disposed | 2.9% (price as of 2026-08-18) |
| July 1, 2026 | KYMR | S 10b5-1 | 44,050 | $115.69 | $5,096,144 | 669,904 Direct | -6.17% | Disposed | 3.7% (price as of 2026-08-18) |
| July 1, 2026 | KYMR | S 10b5-1 | 24,105 | $114.96 | $2,771,111 | 713,954 Direct | -3.27% | Disposed | 4.3% (price as of 2026-08-18) |
| July 1, 2026 | KYMR | S 10b5-1 | 6,626 | $113.98 | $755,231 | 738,059 Direct | -0.89% | Disposed | 5.2% (price as of 2026-08-18) |
| July 1, 2026 | KYMR | S 10b5-1 | 1,883 | $112.80 | $212,402 | 744,685 Direct | -0.25% | Disposed | 6.3% (price as of 2026-08-18) |
| April 29, 2026 | KYMR | S 10b5-1 | 936 | $82.45 | $77,173 | 666,195 Direct | -0.14% | Disposed | 45.5% (price as of 2026-08-18) |
| April 29, 2026 | KYMR | S 10b5-1 | 12,059 | $81.70 | $985,220 | 667,131 Direct | -1.78% | Disposed | 46.8% (price as of 2026-08-18) |
| April 29, 2026 | KYMR | S 10b5-1 | 17,005 | $80.74 | $1,372,984 | 679,190 Direct | -2.44% | Disposed | 48.6% (price as of 2026-08-18) |
| Feb. 25, 2026 | KYMR | S 10b5-1 | 8 | $93.49 | $748 | 666,195 Direct | 0.00% | Disposed | 28.3% (price as of 2026-08-18) |
| Feb. 25, 2026 | KYMR | S 10b5-1 | 1,501 | $92.81 | $139,308 | 666,203 Direct | -0.22% | Disposed | 29.2% (price as of 2026-08-18) |
| Feb. 25, 2026 | KYMR | S 10b5-1 | 3,293 | $91.76 | $302,166 | 667,704 Direct | -0.49% | Disposed | 30.7% (price as of 2026-08-18) |
| Feb. 25, 2026 | KYMR | S 10b5-1 | 5,434 | $90.39 | $491,179 | 670,997 Direct | -0.80% | Disposed | 32.7% (price as of 2026-08-18) |
| Feb. 25, 2026 | KYMR | S 10b5-1 | 19,764 | $89.78 | $1,774,412 | 676,431 Direct | -2.84% | Disposed | 33.6% (price as of 2026-08-18) |
| Dec. 31, 2025 | KYMR | S 10b5-1 | 6,014 | $78.52 | $472,219 | 663,077 Direct | -0.90% | Disposed | 52.8% (price as of 2026-08-18) |
| Dec. 31, 2025 | KYMR | S 10b5-1 | 23,986 | $77.95 | $1,869,709 | 669,091 Direct | -3.46% | Disposed | 53.9% (price as of 2026-08-18) |
| Dec. 8, 2025 | KYMR | S 10b5-1 | 100,000 | $89.17 | $8,917,000 | 660,482 Direct | -13.15% | Disposed | 34.5% (price as of 2026-08-18) |
| Oct. 29, 2025 | KYMR | S 10b5-1 | 24,511 | $61.02 | $1,495,661 | 664,109 Direct | -3.56% | Disposed | 96.6% (price as of 2026-08-18) |
| Oct. 29, 2025 | KYMR | S 10b5-1 | 1,862 | $59.72 | $111,199 | 688,620 Direct | -0.27% | Disposed | 100.9% (price as of 2026-08-18) |
| Oct. 29, 2025 | KYMR | S 10b5-1 | 3,627 | $61.46 | $222,915 | 660,482 Direct | -0.55% | Disposed | 95.2% (price as of 2026-08-18) |
| Sept. 16, 2025 | KYMR | S 10b5-1 | 30,000 | $49.00 | $1,470,000 | 660,482 Direct | -4.34% | Disposed | 144.8% (price as of 2026-08-18) |
| June 3, 2025 | KYMR | S 10b5-1 | 30,000 | $49.00 | $1,470,000 | 660,482 Direct | -4.34% | Disposed | 144.8% (price as of 2026-08-18) |
| Jan. 12, 2022 | KYMR | S 10b5-1 | 241 | $53.97 | $13,007 | 472,199 Direct | -0.05% | Disposed | 122.3% (price as of 2026-08-18) |
| Jan. 12, 2022 | KYMR | S 10b5-1 | 1,623 | $53.27 | $86,457 | 472,440 Direct | -0.34% | Disposed | 125.2% (price as of 2026-08-18) |
| Jan. 12, 2022 | KYMR | S 10b5-1 | 4,022 | $52.02 | $209,224 | 474,063 Direct | -0.84% | Disposed | 130.6% (price as of 2026-08-18) |
| Jan. 12, 2022 | KYMR | S 10b5-1 | 2,726 | $51.31 | $139,871 | 478,085 Direct | -0.57% | Disposed | 133.8% (price as of 2026-08-18) |
| Jan. 11, 2022 | KYMR | S 10b5-1 | 347 | $55.05 | $19,102 | 472,199 Direct | -0.07% | Disposed | 117.9% (price as of 2026-08-18) |
| Jan. 11, 2022 | KYMR | S 10b5-1 | 6,644 | $54.42 | $361,566 | 472,546 Direct | -1.39% | Disposed | 120.4% (price as of 2026-08-18) |
| Jan. 11, 2022 | KYMR | S 10b5-1 | 9,932 | $53.68 | $533,150 | 479,190 Direct | -2.03% | Disposed | 123.5% (price as of 2026-08-18) |
| Jan. 10, 2022 | KYMR | S 10b5-1 | 106 | $54.99 | $5,829 | 472,199 Direct | -0.02% | Disposed | 118.1% (price as of 2026-08-18) |
| Jan. 10, 2022 | KYMR | S 10b5-1 | 4,201 | $54.40 | $228,534 | 472,305 Direct | -0.88% | Disposed | 120.5% (price as of 2026-08-18) |
| Jan. 10, 2022 | KYMR | S 10b5-1 | 10,673 | $53.35 | $569,405 | 476,506 Direct | -2.19% | Disposed | 124.8% (price as of 2026-08-18) |
| Jan. 10, 2022 | KYMR | S 10b5-1 | 7,485 | $52.46 | $392,663 | 487,179 Direct | -1.51% | Disposed | 128.7% (price as of 2026-08-18) |
| Oct. 11, 2021 | KYMR | S 10b5-1 | 744 | $54.50 | $40,548 | 464,199 Direct | -0.16% | Disposed | 120.1% (price as of 2026-08-18) |
| Oct. 11, 2021 | KYMR | S 10b5-1 | 5,712 | $53.58 | $306,049 | 464,943 Direct | -1.21% | Disposed | 123.9% (price as of 2026-08-18) |
| Oct. 8, 2021 | KYMR | S 10b5-1 | 271 | $61.87 | $16,767 | 464,199 Direct | -0.06% | Disposed | 93.9% (price as of 2026-08-18) |
| Oct. 8, 2021 | KYMR | S 10b5-1 | 670 | $60.32 | $40,414 | 464,470 Direct | -0.14% | Disposed | 98.9% (price as of 2026-08-18) |
Showing latest 100 of 190 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 7, 2026 | KYMR | Stock Option (Right to Buy) | Common Stock (4,441) | $2.08 | Nov. 13, 2029 | 4,441 | Disposed |
| July 7, 2026 | KYMR | Stock Option (Right to Buy) | Common Stock (45,559) | $2.08 | Nov. 13, 2029 | 45,559 | Disposed |
| July 1, 2026 | KYMR | Stock Option (Right to Buy) | Common Stock (80,000) | $2.08 | Nov. 13, 2029 | 80,000 | Disposed |
| April 29, 2026 | KYMR | Stock Option (Right to Buy) | Common Stock (30,000) | $2.08 | Nov. 13, 2029 | 30,000 | Disposed |
| March 2, 2026 | KYMR | Stock Option (Right to Buy) | Common Stock (215,000) | $90.10 | March 1, 2036 | 215,000 | Acquired |
| Feb. 25, 2026 | KYMR | Stock Option (Right to Buy) | Common Stock (30,000) | $2.08 | Nov. 13, 2029 | 30,000 | Disposed |
| Jan. 5, 2026 | KYMR | Stock Option (Right to Buy) | Common Stock (3,118) | $32.07 | March 1, 2033 | 3,118 | Disposed |
| Dec. 31, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (30,000) | $2.08 | Nov. 13, 2029 | 30,000 | Disposed |
| Dec. 17, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (2,595) | $38.53 | March 1, 2032 | 2,595 | Disposed |
| Dec. 8, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (100,000) | $2.08 | Nov. 13, 2029 | 100,000 | Disposed |
| Oct. 29, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (30,000) | $2.08 | Nov. 13, 2029 | 30,000 | Disposed |
| Sept. 16, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (30,000) | $2.08 | Nov. 13, 2029 | 30,000 | Disposed |
| June 3, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (30,000) | $2.08 | Nov. 13, 2029 | 30,000 | Disposed |
| March 3, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (365,000) | $30.17 | March 2, 2035 | 365,000 | Acquired |
| Jan. 10, 2025 | KYMR | Stock Option (Right to Buy) | Common Stock (10,000) | $2.08 | Nov. 13, 2029 | 10,000 | Acquired |
| July 1, 2024 | KYMR | Stock Option (Right to Buy) | Common Stock (18,773) | $5.33 | May 13, 2030 | 18,773 | Disposed |
| June 18, 2024 | KYMR | Stock Option (Right to Buy) | Common Stock (14,413) | $2.08 | Nov. 13, 2029 | 14,413 | Disposed |
| March 1, 2024 | KYMR | Stock Option (Right to Buy) | Common Stock (530,000) | $43.50 | Feb. 28, 2034 | 530,000 | Acquired |
| Jan. 2, 2024 | KYMR | Stock Option (Right to Buy) | Common Stock (9,000) | $2.08 | Nov. 13, 2029 | 9,000 | Disposed |
| Nov. 3, 2023 | KYMR | Stock Option (Right to Buy) | Common Stock (17,632) | $2.08 | Nov. 13, 2029 | 17,632 | Disposed |
| Nov. 3, 2023 | KYMR | Stock Option (Right to Buy) | Common Stock (2,368) | $2.08 | May 22, 2029 | 2,368 | Disposed |
| Aug. 8, 2023 | KYMR | Stock Option (Right to Buy) | Common Stock (12,000) | $2.08 | May 22, 2029 | 12,000 | Disposed |
| March 1, 2023 | KYMR | Stock Option (Right to Buy) | Common Stock (450,000) | $32.07 | Feb. 28, 2033 | 450,000 | Acquired |
| Dec. 8, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (10,000) | $2.08 | Nov. 13, 2029 | 10,000 | Disposed |
| Oct. 17, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (27,676) | $2.08 | Nov. 13, 2029 | 27,676 | Disposed |
| Oct. 17, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (32,056) | $2.08 | May 22, 2029 | 32,056 | Disposed |
| May 3, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (20,000) | $2.08 | May 22, 2029 | 20,000 | Disposed |
| March 1, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (275,100) | $38.53 | Feb. 29, 2032 | 275,100 | Acquired |
| Jan. 14, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (10,000) | $2.08 | May 22, 2029 | 10,000 | Disposed |
| Jan. 12, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (8,612) | $2.08 | Nov. 13, 2029 | 8,612 | Disposed |
| Jan. 11, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (16,923) | $2.08 | Nov. 13, 2029 | 16,923 | Disposed |
| Jan. 10, 2022 | KYMR | Stock Option (Right to Buy) | Common Stock (22,465) | $2.08 | Nov. 13, 2029 | 22,465 | Disposed |
| Dec. 16, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (8,000) | $2.08 | May 22, 2029 | 8,000 | Disposed |
| Oct. 11, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (6,456) | $2.08 | Nov. 13, 2029 | 6,456 | Disposed |
| Oct. 8, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (41,544) | $2.08 | Nov. 13, 2029 | 41,544 | Disposed |
| Aug. 19, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (12,000) | $2.08 | May 22, 2029 | 12,000 | Disposed |
| Aug. 4, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (1,037) | $2.08 | Nov. 13, 2029 | 1,037 | Disposed |
| Aug. 3, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (5,669) | $2.08 | Nov. 13, 2029 | 5,669 | Disposed |
| Aug. 2, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (23,456) | $2.08 | Nov. 13, 2029 | 23,456 | Disposed |
| July 30, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (6,279) | $2.08 | Nov. 13, 2029 | 6,279 | Disposed |
| July 29, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (680) | $2.08 | Nov. 13, 2029 | 680 | Disposed |
| July 28, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (3,864) | $2.08 | Nov. 13, 2029 | 3,864 | Disposed |
| July 26, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (9,015) | $2.08 | Nov. 13, 2029 | 9,015 | Disposed |
| July 8, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (48,000) | $2.08 | Nov. 13, 2029 | 48,000 | Disposed |
| June 14, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (40,000) | $2.08 | May 22, 2029 | 40,000 | Disposed |
| June 10, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (23,009) | $2.08 | Nov. 13, 2029 | 23,009 | Disposed |
| June 9, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (5,752) | $2.08 | Nov. 13, 2029 | 5,752 | Disposed |
| June 8, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (270) | $2.08 | Nov. 13, 2029 | 270 | Disposed |
| June 7, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (12,724) | $2.08 | Nov. 13, 2029 | 12,724 | Disposed |
| May 19, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (15,000) | $2.08 | May 22, 2029 | 15,000 | Disposed |
| May 12, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (8,245) | $2.08 | Nov. 13, 2029 | 8,245 | Disposed |
| April 26, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (2,768) | $2.08 | Nov. 13, 2029 | 2,768 | Disposed |
| April 23, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (680) | $2.08 | Nov. 13, 2029 | 680 | Disposed |
| April 22, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (10,959) | $2.08 | Nov. 13, 2029 | 10,959 | Disposed |
| April 19, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (6,000) | $2.08 | May 22, 2029 | 6,000 | Disposed |
| April 19, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (653) | $2.08 | Nov. 13, 2029 | 653 | Disposed |
| April 15, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (4,940) | $2.08 | Nov. 13, 2029 | 4,940 | Disposed |
| April 13, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (15,000) | $2.08 | May 22, 2029 | 15,000 | Disposed |
| April 12, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (15,267) | $2.08 | Nov. 13, 2019 | 15,267 | Disposed |
| April 9, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (22,794) | $2.08 | Nov. 13, 2019 | 22,794 | Disposed |
| April 8, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (9,939) | $2.08 | Nov. 13, 2019 | 9,939 | Disposed |
| March 1, 2021 | KYMR | Stock Option (Right to Buy) | Common Stock (375,000) | $48.46 | Feb. 28, 2031 | 375,000 | Acquired |
| Aug. 20, 2020 | KYMR | Stock Option (Right to Buy) | Common Stock (125,399) | $20.00 | Aug. 19, 2030 | 125,399 | 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 |
|---|---|---|---|---|
| Aug. 20, 2020 | KYMR | Common Stock | 376,199 | Direct |
| Aug. 20, 2020 | KYMR | Stock Option (Right to Buy)→ Common Stock (172,424) | 172,424 | Direct |
| Aug. 20, 2020 | KYMR | Stock Option (Right to Buy)→ Common Stock (622,280) | 622,280 | Direct |
| Aug. 20, 2020 | KYMR | Stock Option (Right to Buy)→ Common Stock (292,725) | 292,725 | Direct |
| Aug. 20, 2020 | KYMR | Stock Option (Right to Buy)→ Common Stock (307,229) | 307,229 | Direct |
| Aug. 20, 2020 | KYMR | Stock Option (Right to Buy)→ Common Stock (76,493) | 76,493 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $693,000 | — | — | — | $519,750 | — | $14,000 | $8,545,609 |
| 2024 | $670,000 | — | — | — | $542,700 | — | $13,800 | $15,433,147 |
| 2023 | $640,000 | — | — | $8,594,942 | $422,400 | — | $13,200 | $9,670,542 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.