Nina S Kjellson
CIK 1381980 · View on SEC EDGAR ↗
Insider
First SEC filing: Sept. 14, 2021 · Latest: Sept. 14, 2021
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 14 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
14 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 5, 2025 | TYRA | S | 3,511 | $13.76 | $48,311 | 443,885 Indirect | -0.78% | Disposed | 91.7% (price as of 2026-08-21) |
| Feb. 5, 2025 | TYRA | S | 1,890 | $13.76 | $26,006 | 3,700,705 Indirect | -0.05% | Disposed | 91.7% (price as of 2026-08-21) |
| Jan. 23, 2025 | TYRA | S | 4,825 | $16.26 | $78,454 | 3,702,595 Indirect | -0.13% | Disposed | 62.2% (price as of 2026-08-21) |
| Jan. 21, 2025 | TYRA | S | 3,993 | $16.36 | $65,325 | 3,707,420 Indirect | -0.11% | Disposed | 61.2% (price as of 2026-08-21) |
| Jan. 17, 2025 | TYRA | S | 461 | $16.40 | $7,560 | 447,396 Indirect | -0.10% | Disposed | 60.8% (price as of 2026-08-21) |
| Jan. 17, 2025 | TYRA | S | 12,808 | $16.40 | $210,051 | 3,711,413 Indirect | -0.34% | Disposed | 60.8% (price as of 2026-08-21) |
| Jan. 16, 2025 | TYRA | S | 835 | $16.29 | $13,602 | 447,857 Indirect | -0.19% | Disposed | 61.9% (price as of 2026-08-21) |
| Jan. 16, 2025 | TYRA | S | 6,944 | $16.29 | $113,118 | 3,724,221 Indirect | -0.19% | Disposed | 61.9% (price as of 2026-08-21) |
| Nov. 25, 2024 | TYRA | S | 566 | $16.84 | $9,531 | 448,692 Indirect | -0.13% | Disposed | 56.6% (price as of 2026-08-21) |
| Nov. 25, 2024 | TYRA | S | 4,706 | $16.84 | $79,249 | 3,731,165 Indirect | -0.13% | Disposed | 56.6% (price as of 2026-08-21) |
| Nov. 7, 2024 | TYRA | S | 2,371 | $17.32 | $41,066 | 449,258 Indirect | -0.52% | Disposed | 52.3% (price as of 2026-08-21) |
| Nov. 7, 2024 | TYRA | S | 19,720 | $17.32 | $341,550 | 3,735,871 Indirect | -0.53% | Disposed | 52.3% (price as of 2026-08-21) |
| Nov. 6, 2024 | TYRA | S | 5,635 | $17.18 | $96,809 | 451,629 Indirect | -1.23% | Disposed | 53.5% (price as of 2026-08-21) |
| Nov. 6, 2024 | TYRA | S | 46,856 | $17.18 | $804,986 | 3,755,591 Indirect | -1.23% | Disposed | 53.5% (price as of 2026-08-21) |
| Nov. 5, 2024 | TYRA | S | 1,126 | $16.77 | $18,883 | 457,264 Indirect | -0.25% | Disposed | 57.3% (price as of 2026-08-21) |
| Nov. 5, 2024 | TYRA | S | 9,367 | $16.77 | $157,085 | 3,802,447 Indirect | -0.25% | Disposed | 57.3% (price as of 2026-08-21) |
| Nov. 4, 2024 | TYRA | S | 116 | $17.01 | $1,973 | 458,390 Indirect | -0.03% | Disposed | 55.1% (price as of 2026-08-21) |
| Nov. 4, 2024 | TYRA | S | 960 | $17.01 | $16,330 | 3,811,814 Indirect | -0.03% | Disposed | 55.1% (price as of 2026-08-21) |
| Nov. 1, 2024 | TYRA | S | 73 | $17.16 | $1,253 | 458,506 Indirect | -0.02% | Disposed | 53.7% (price as of 2026-08-21) |
| Nov. 1, 2024 | TYRA | S | 2,878 | $16.54 | $47,602 | 458,579 Indirect | -0.62% | Disposed | 59.5% (price as of 2026-08-21) |
| Nov. 1, 2024 | TYRA | S | 604 | $17.16 | $10,365 | 3,812,774 Indirect | -0.02% | Disposed | 53.7% (price as of 2026-08-21) |
| Nov. 1, 2024 | TYRA | S | 23,938 | $16.54 | $395,935 | 3,813,378 Indirect | -0.62% | Disposed | 59.5% (price as of 2026-08-21) |
| Oct. 31, 2024 | TYRA | S | 10,750 | $16.46 | $176,945 | 461,457 Indirect | -2.28% | Disposed | 60.2% (price as of 2026-08-21) |
| Oct. 31, 2024 | TYRA | S | 89,390 | $16.46 | $1,471,359 | 3,837,316 Indirect | -2.28% | Disposed | 60.2% (price as of 2026-08-21) |
| Oct. 30, 2024 | TYRA | S | 1,189 | $16.17 | $19,226 | 472,207 Indirect | -0.25% | Disposed | 63.1% (price as of 2026-08-21) |
| Oct. 30, 2024 | TYRA | S | 9,889 | $16.17 | $159,905 | 3,926,706 Indirect | -0.25% | Disposed | 63.1% (price as of 2026-08-21) |
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 8, 2026 | ELOX | Stock Option (Right to Buy) | Common Stock (13,587) | $11.00 | June 8, 2036 | 13,587 | Acquired |
| May 29, 2024 | TYRA | Stock Option (Right to Buy) | Common Stock (18,600) | $15.94 | May 28, 2034 | 18,600 | Acquired |
| May 31, 2023 | TYRA | Stock Option (Right to Buy) | Common Stock (14,500) | $14.47 | May 30, 2033 | 14,500 | Acquired |
| June 13, 2022 | TYRA | Stock Option (Right to Buy) | Common Stock (14,500) | $5.38 | June 12, 2032 | 14,500 | Acquired |
| Sept. 17, 2021 | TYRA | Series B Preferred Stock | Common Stock (473,396) | — | — | 182,258 | Disposed |
| Sept. 17, 2021 | TYRA | Series B Preferred Stock | Common Stock (473,394) | — | — | 182,257 | Disposed |
| Sept. 17, 2021 | TYRA | Series A Preferred Stock | Common Stock (3,463,201) | — | — | 1,333,334 | Disposed |
| Sept. 17, 2021 | TYRA | Series B Preferred Stock | Common Stock (473,396) | — | — | 182,258 | Disposed |
| Sept. 17, 2021 | TYRA | Series B Preferred Stock | Common Stock (473,394) | — | — | 182,257 | Disposed |
| Sept. 17, 2021 | TYRA | Series A Preferred Stock | Common Stock (3,463,201) | — | — | 1,333,334 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.