Lindgardt Zhenya
Director · Officer · SERA
As of 2026-09-16, Lindgardt Zhenya has 22 Form 4 transactions on record across 1 company — 11 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $1.7M
- Indirect $0
| SERA | direct | 837,848 sh | $1.7M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-10 | SERA | Sale | 7,022 @ $2.00 | $14K | −0.8% of holding | 837,848 | Form 4 |
| 2026-09-08 | SERA | Sale | 20,139 @ $2.00 | $40K | −2.3% of holding | 844,870 | Form 4 |
| 2026-06-11 | SERA | Sale | 6,990 @ $2.01 | $14K | −0.8% of holding | 865,009 | Form 4 |
| 2026-06-09 | SERA | Sale | 20,755 @ $2.08 | $43K | −2.3% of holding | 871,999 | Form 4 |
| 2026-03-11 | SERA | Sale | 2,973 @ $2.04 | $6K | −0.4% of holding | 738,314 | Form 4 |
| 2026-03-10 | SERA | Sale | 22,639 @ $1.90 | $43K | −3.0% of holding | 741,287 | Form 4 |
| 2025-12-10 | SERA | Sale | 4,155 @ $3.31 | $14K | −0.5% of holding | 763,926 | Form 4 |
| 2025-12-09 | SERA | Sale | 28,215 @ $3.04 | $86K | −3.5% of holding | 768,081 | Form 4 |
| 2025-11-10 | SERA | Sale | 11,594 @ $2.62 | $30K | −1.4% of holding | 796,296 | Form 4 |
| 2025-09-11 | SERA | Sale | 3,246 @ $3.13 | $10K | −0.4% of holding | 807,890 | Form 4 |
| 2025-09-09 | SERA | Sale | 21,158 @ $3.15 | $67K | −2.5% of holding | 811,136 | Form 4 |
| 2025-08-08 | SERA | Sale | 8,571 @ $2.54 | $22K | −1.0% of holding | 832,294 | Form 4 |
| 2025-06-10 | SERA | Sale | 3,344 @ $1.48 | $5K | −0.4% of holding | 840,865 | Form 4 |
| 2025-06-09 | SERA | Sale | 23,042 @ $1.43 | $33K | −2.7% of holding | 844,209 | Form 4 |
| 2025-05-08 | SERA | Sale | 9,406 @ $2.44 | $23K | −1.1% of holding | 867,251 | Form 4 |
| 2025-03-07 | SERA | Sale | 29,722 @ $4.12 | $122K | −3.3% of holding | 876,657 | Form 4 |
| 2025-02-12 | SERA | Sale | 14,075 @ $4.58 | $64K | −1.8% of holding | 779,459 | Form 4 |
| 2024-12-10 | SERA | Sale | 26,224 @ $7.41 | $194K | −3.2% of holding | 793,534 | Form 4 |
4 award / exercise / gift records — not counted as purchases
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.