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Serguei Melnik
Activist
First SEC filing: March 13, 2025 · Latest: March 13, 2025
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 20, 2024 | NTRB | A | 97,500 | $2.61 | $254,475 | 245,000 Direct | +66.10% | Acquired | 155.9% (price as of 2026-10-06) |
| March 6, 2023 | NTRB | G | 5,000 | · | · | 827,999 Direct | -0.60% | Disposed | (price as of 2026-10-06) |
| Feb. 24, 2022 | NTRB | P | 500 | $4.03 | $2,015 | 633,000 Direct | +0.08% | Acquired | 93.3% (price as of 2026-10-06) |
| Feb. 24, 2022 | NTRB | P | 5,000 | $4.03 | $20,150 | 637,500 Direct | -0.78% | Disposed | 93.3% (price as of 2026-10-06) |
| Feb. 24, 2022 | NTRB | P | 500 | $4.03 | $2,015 | 633,000 Direct | -0.08% | Disposed | 93.3% (price as of 2026-10-06) |
| Feb. 6, 2022 | NTRB | G | 10,000 | · | · | 632,500 Direct | -1.56% | Disposed | (price as of 2026-10-06) |
| May 30, 2019 | NTRB | G | 20,000 | · | · | 2,530,000 Direct | -0.78% | Disposed | (price as of 2026-10-06) |
| Aug. 19, 2017 | NTRB | G | 450,000 | · | · | 2,550,000 Direct | -15.00% | Disposed | (price as of 2026-10-06) |
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 |
|---|---|---|---|---|---|---|---|
| March 20, 2024 | NTRB | Options to Purchase Common Stock | Common Stock | $2.61 | March 20, 2027 | 97,500 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).