Cross-institution positioning
May 11, 2026Mixed positioning. No institution has two comparable Schedule 13 observations yet.
Source: Schedule 13 researchSeaport Therapeutics, Inc.
Latest stored close $18.15 as of Oct 9, 2026 View live quote ↗
See how each tracked institution's reported ownership changed across SEC position dates. Full history is available with Investor or Pro access.
What the evidence shows across the newest institutional, insider, company-event, 13F, fundamental, and price data; STOCKNODE combines these layers into a quantitative research signal while preserving each source and reporting window.
Mixed positioning. No institution has two comparable Schedule 13 observations yet.
Source: Schedule 13 research1 increased/new, 0 reduced/exited across 1 manager in the latest comparable Form 13F quarter.
Source: Form 13F quarter-end holdingsOver the last 90 days, SEC-coded non-derivative P/S activity includes 1 purchase by 1 reporting owner and 0 sales by 0 reporting owners. Amendments are shown in the filing evidence but excluded from rolling activity totals.
Source: SEC Forms 3/4/51 non-amendment material event in the last 90 days; Latest classified evidence: Results of operations / financial condition. Registration and prospectus filings are treated as financing capacity/disclosure evidence, not proof that securities were sold.
Source: SEC 8-K / securities filing metadataNet income -315.2% YoY; Free cash flow -29.2% YoY. Periods are compared only when the SEC facts are aligned and comparable.
Source: SEC Company FactsRecent close is 60% through its reported 52-week range.
Source: Stored historical price seriesFiled May 11, 2026. Unlock the dated position comparison, disclosure classification, confidence, price context, and filing-specific significance analysis.
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The research summary above gives the current read. This section shows the dated holder-level evidence behind it.
See each institution's newest reported position against its own prior report, with position as-of date separated from SEC filed date. Institution names and filing freshness remain public below.
Comparable holder direction grouped by SEC position as-of date — never presented as trade dates.
Compare each institution only with its own prior reported position. Public visitors can see who is tracked and how fresh the filing is; paid research reveals the actual comparison.
Investor and Pro reveal holder-by-holder changes, reported ownership history, dated breadth, disclosure timing, institution comparison, and filing-specific analysis without treating Schedule 13 reports as trade dates.
Reported Section 16 ownership activity. Rolling purchase/sale totals use non-derivative SEC transaction codes P and S only; amendments remain visible but are excluded from those totals.
| Date | Reporting owner | Code | Security | Shares | Price | Ownership | Filed |
|---|---|---|---|---|---|---|---|
| Jun 22, 2026 | HOMBACH ROBERT J. | POpen-market or private purchase | Common Stock | 13.0K | $18.14 | Indirect | Jun 24, 2026 |
| May 4, 2026 | PureTech Health plc, PureTech LYT, Inc. | CConversion of derivative · derivative | Series B Preferred Stock | 3.0M | $0.00 | Indirect | May 6, 2026 |
| May 4, 2026 | PureTech Health plc, PureTech LYT, Inc. | CConversion of derivative · derivative | Series A-2 Preferred Stock | 8.4M | $0.00 | Indirect | May 6, 2026 |
| May 4, 2026 | PureTech Health plc, PureTech LYT, Inc. | CConversion of derivative · derivative | Series A-1 Preferred Stock | 40.0M | $0.00 | Indirect | May 6, 2026 |
| May 4, 2026 | PureTech Health plc, PureTech LYT, Inc. | CConversion of derivative | Common Stock | 965.3K | — | Indirect | May 6, 2026 |
| May 4, 2026 | PureTech Health plc, PureTech LYT, Inc. | CConversion of derivative | Common Stock | 2.7M | — | Indirect | May 6, 2026 |
| May 4, 2026 | PureTech Health plc, PureTech LYT, Inc. | CConversion of derivative | Common Stock | 12.7M | — | Indirect | May 6, 2026 |
| May 4, 2026 | HEALY JAMES | CConversion of derivative · derivative | Series B Preferred Stock | 2.5M | $0.00 | Indirect | May 4, 2026 |
| May 4, 2026 | HEALY JAMES | CConversion of derivative · derivative | Series A-2 Preferred Stock | 6.1M | $0.00 | Indirect | May 4, 2026 |
| May 4, 2026 | HEALY JAMES | CConversion of derivative | Common Stock | 804.4K | — | Indirect | May 4, 2026 |
| May 4, 2026 | HEALY JAMES | CConversion of derivative | Common Stock | 1.9M | — | Indirect | May 4, 2026 |
| May 4, 2026 | White Lauren | CConversion of derivative · derivative | Series B Preferred Stock | 21.1K | $0.00 | Indirect | May 4, 2026 |
| May 4, 2026 | White Lauren | CConversion of derivative | Common Stock | 6.7K | — | Indirect | May 4, 2026 |
| May 4, 2026 | Gladstein Lana | CConversion of derivative · derivative | Series B Preferred Stock | 105.3K | $0.00 | Direct | May 4, 2026 |
| May 4, 2026 | Gladstein Lana | CConversion of derivative | Common Stock | 33.5K | — | Direct | May 4, 2026 |
| May 4, 2026 | Chen Michael Cunyuan | CConversion of derivative · derivative | Series B Preferred Stock | 10.5K | $0.00 | Direct | May 4, 2026 |
| May 4, 2026 | Chen Michael Cunyuan | CConversion of derivative | Common Stock | 3.4K | — | Direct | May 4, 2026 |
| May 4, 2026 | Torres Denice | CConversion of derivative · derivative | Series B Preferred Stock | 42.1K | $0.00 | Indirect | May 4, 2026 |
| May 4, 2026 | Torres Denice | CConversion of derivative | Common Stock | 13.4K | — | Indirect | May 4, 2026 |
| May 4, 2026 | PAUL STEVEN M | CConversion of derivative · derivative | Series B Preferred Stock | 210.5K | $0.00 | Direct | May 4, 2026 |
Recent 8-K item classifications plus securities registration and prospectus filings. Registration or prospectus filings show financing capacity/disclosure activity; they do not by themselves prove that securities were sold.
| Filed | Form | 8-K item(s) | Classification | Capital context | SEC |
|---|---|---|---|---|---|
| Aug 3, 2026 | 8-K | 2.02, 9.01 | Results of operations / financial condition; Financial statements / exhibits | — | Filing |
| Jun 8, 2026 | 8-K | 2.02, 9.01 | Results of operations / financial condition; Financial statements / exhibits | — | Filing |
| May 4, 2026 | 8-K | 5.03, 9.01 | Charter or bylaw change; Financial statements / exhibits | — | Filing |
| May 4, 2026 | S-8 | — | Employee-plan securities registration | Equity | Filing |
| May 1, 2026 | 424B4 | — | Prospectus filing | Capital-related | Filing |
| Apr 27, 2026 | S-1/AAmendment | — | Securities registration statement | Capital-related | Filing |
| Apr 10, 2026 | S-1 | — | Securities registration statement | Capital-related | Filing |
Period-aligned SEC facts. Comparisons appear only when periods and units are comparable.
Dated price context from the historical market series already collected for this security.
Returns are close-to-close price changes. Volatility and drawdown are factual historical context, not recommendations.
Schedule 13G/13D reports beneficial ownership at an observation date. “Accumulation” or “reduction” is inferred from changes in reported shares when available; it is not a list of individual trades or exact execution prices.
Form 13F rows are quarter-end holding context only and do not establish an exact entry date.
For more context, see how to read a Schedule 13G, filing date vs event date, or Schedule 13G vs Schedule 13D.
| Holder | Observed / filed | Reported change | Shares | Ownership | Observation | Filing | Latest |
|---|---|---|---|---|---|---|---|
| Goldman Sachs Group CIK0000886982 | Jun 30, 2026 quarter end Aug 14, 2026 filed Form 13F quarter-end evidence | Earlier Form 13F quarter-end holding Quarter-end holding evidence; no ownership percentage or signal. | 2.2M | $18.15 | |||
| Goldman Sachs Group CIK0000886982 | May 6, 2026 observed May 11, 2026 filed · 5d Initial Schedule 13G | Initial Schedule 13G | 2.8M | 5.50% | $16.00 | $15.25 | $18.15 |
Compare SPTX with other securities showing similar institutional activity or recent accumulation across several tracked institutions.