This Insider Trading Alerts roundup reviews five public SEC Form 4 purchase alerts from the August 24-30, 2026 report window: OESX, ABCL, XELB, RHLD, and GEVO. In the supplied report, the next-close moves ranged from +10.46% to +19.20% after the alert timestamps.
Original-data note: the supplied screenshot was a "Top 5 Winners" table captured on August 30, 2026. It listed purchase-type alerts, alert timestamps, reporting insiders, issuers, and pnl_1d_close values. The visible table did not show the total denominator of all alerts reviewed, so this draft does not state one.
The important word is "after." These are historical alert-to-next-close observations, not proof that the Form 4 caused the move. SEC Form 4 is the public filing used by company insiders to report changes in beneficial ownership. It tells you who reported a change, what security was involved, the transaction code, the date, the price, and the number of shares. It does not explain motive or predict what the stock will do next.
Key Takeaways
- OESX had the largest reported next-close move at +19.20% after director Heather L. Wishart-Smith reported a Code P purchase of 1,054 shares at $18.9635.
- ABCL followed at +17.81% after director and 10% owner Michael R. Hayden reported a 53,613-share purchase at a weighted-average $10.64.
- XELB moved +12.79% after CEO and chairman Robert W. D'Loren reported two open-market purchase lines totaling 22,000 shares.
- RHLD moved +12.40% after CFO Kurt Schoen reported buying 375 shares at a weighted-average $117.84.
- GEVO moved +10.46% after director James J. Barber reported buying 50,000 shares at $1.54.
- The context around these moves differs by company: Orion had recently reported profitable growth, AbCellera had clinical and collaboration updates, Xcel was working through a smaller revenue base and expense cuts, Resolute had recent second-quarter results, and Gevo had raised full-year adjusted EBITDA expectations.
How this 24-hour mover report should be read
The supplied report ranks alerts by pnl_1d_close. pnl_1d_close is a one-day hold-period field measured from the alert timestamp to the next applicable closing price. Four of the five alerts were timestamped on August 24, 2026, and one was timestamped on August 25.
That makes the report useful as a watchlist, but not as a controlled event study. A next-close move can reflect the filing, earlier news, earnings, sector movement, liquidity, short interest, spread, order flow, or a combination of events. For background on the underlying disclosure, see our guide to what SEC Form 4 reports. For the price-mechanics side, see how stock prices are determined.
All five transaction rows reviewed below use Code P. Code P is the SEC transaction code for an open-market or private purchase of a non-derivative or derivative security, according to the SEC ownership-form code reference. That code identifies the transaction type. It does not, by itself, establish why the insider bought or whether the trade is meaningful for future returns.
| Rank | Ticker | Company | Reporting person | Alert type | Reported next-close move |
|---|---|---|---|---|---|
| 1 | OESX | Orion Energy Systems, Inc. | Heather L. Wishart-Smith | Buy | +19.20% |
| 2 | ABCL | AbCellera Biologics Inc. | Michael R. Hayden | Buy | +17.81% |
| 3 | XELB | XCel Brands, Inc. | Robert W. D'Loren | Buy | +12.79% |
| 4 | RHLD | Resolute Holdings Management, Inc. | Kurt Schoen | Buy | +12.40% |
| 5 | GEVO | Gevo, Inc. | James J. Barber | Buy | +10.46% |
1. OESX: Orion Energy Systems, Inc. moved +19.20%
The largest move in the supplied report was Orion Energy Systems, Inc. The alert was timestamped August 24, 2026, at 4:29 p.m. Eastern time. The OESX Form 4 identifies Heather L. Wishart-Smith as a director and reports a Code P purchase of 1,054 common shares at $18.9635 on August 20, 2026. The reported transaction value was about $19,988.
Orion describes itself as a provider of energy-efficient LED lighting, EV charging stations, and maintenance-services solutions. Its most recent earnings release before the alert gave the market a concrete operating update: first-quarter fiscal 2027 revenue rose 32% year over year to $25.7 million, gross margin improved to 34.6%, and net income was $2.0 million compared with a year-earlier loss. The company also said it had entered the hyperscale data-center market with an LED lighting solution and had received a multimillion-dollar customer engagement from a major data-center customer in the quarter (Orion Q1 fiscal 2027 release).
That earnings backdrop is relevant operating context around the OESX alert window. The more careful conclusion is narrower: the filing showed a director purchase, and the stock had the largest next-close move in the supplied report. The release was already public before the alert, so it should be treated as business context rather than a new same-day catalyst.
2. ABCL: AbCellera Biologics Inc. moved +17.81%
AbCellera had the second-largest next-close result. The alert was timestamped August 24, 2026, at 5:22 p.m. Eastern time. The ABCL Form 4 identifies Michael R. Hayden as a director and 10% owner and reports a Code P purchase of 53,613 common shares at a weighted-average $10.64. The transaction value was about $570,442. The filing notes that the shares were acquired in multiple transactions at prices ranging from $10.49 to $10.70.
The business context for ABCL was unusually event-heavy in August. On August 5, AbCellera reported second-quarter 2026 results and said ABCL635 top-line data from a Phase 2 trial were expected in August. The same release said the company had announced collaborations with Jazz Pharmaceuticals and Vertex, with the Jazz arrangement adding $84 million in upfront payments and the collaborations adding more than $100 million in upfront cash to the balance sheet. AbCellera also reported $540.1 million in cash, cash equivalents, and marketable securities at June 30, 2026 (AbCellera Q2 2026 results).
On August 10, AbCellera announced positive top-line Phase 2 results for ABCL635, its investigational non-hormonal treatment for moderate-to-severe vasomotor symptoms due to menopause. The company said the study met primary efficacy endpoints at week 4 and reported an 83% mean reduction in moderate-to-severe symptom frequency in the treatment group compared with 33% for placebo (ABCL635 Phase 2 results).
That clinical and financing context is relevant to ABCL's volatility around the alert window. It still does not prove the Form 4 purchase caused the next-close gain. The filing is one public ownership record inside a larger biotech news cycle.
3. XELB: XCel Brands, Inc. moved +12.79%
XCel Brands ranked third in the supplied report. The alert was timestamped August 25, 2026, at 4:42 p.m. Eastern time. The XELB Form 4 identifies Robert W. D'Loren as CEO and chairman, a director, and a 10% owner. The filing includes several lines, but the open-market purchase lines were 12,000 shares at $0.869 on August 21 and 10,000 shares at $0.875 on August 24. Those two Code P purchase lines total 22,000 shares and about $19,178.
This filing needs footnote-level care because it also reports stock-award and tax-withholding lines from July 31. Those are not the same as the August open-market purchase lines. For Form 4 research, mixing award, tax-withholding, and open-market rows can distort the interpretation.
XCel's August 14 second-quarter release described a company still operating from a small revenue base. Total revenue was $1.1 million, down 14% from the prior-year quarter, primarily because of the Judith Ripka divestiture. Net loss improved to about $2.5 million from $4.0 million in the prior-year quarter. Management also highlighted launches of two influencer-led brands and additional operating-expense reductions, while the balance sheet showed about $0.4 million of unrestricted cash and about $12 million of long-term debt. The company also disclosed a common-stock purchase agreement under which it could sell up to $15.0 million of common stock at its discretion (XCel Q2 2026 results).
That setup can contribute to sharp moves because the stock is low-priced, the company is repositioning around social commerce and influencer-led brands, and liquidity can matter. The Form 4 purchase was notable because it came from the CEO and chairman, but the next-close move should still be read alongside spread, volume, financing risk, and the earlier earnings release. The filing does not disclose D'Loren's motive.
4. RHLD: Resolute Holdings Management, Inc. moved +12.40%
Resolute Holdings had the fourth-largest move. The alert was timestamped August 24, 2026, at 7:29 p.m. Eastern time. The RHLD Form 4 identifies Kurt Schoen as chief financial officer and reports a Code P purchase of 375 common shares at a weighted-average $117.84. The transaction value was $44,190. The footnote says the shares were purchased in multiple transactions between $117.53 and $117.97.
Resolute describes itself as an alternative asset management platform that provides operating-management services, including capital allocation oversight, operating-practice oversight, and M&A sourcing and execution for managed businesses under GPGI, Inc. Its second-quarter release shows why the stock may require more context than a simple price-move screen: the company has a structural relationship with managed businesses and reports consolidated operating data that can differ from a plain operating-company story (Resolute Q2 2026 results).
The purchase was smaller in dollar terms than the ABCL transaction, but the stock's price and share count make the reported value look different on a per-share basis. The better research question is not "did the CFO buy cause the stock to move?" It is how the filing appeared alongside an already public set of second-quarter disclosures, balance-sheet structure, and management's capital-allocation narrative. The filing itself only supports the narrower fact: the CFO reported buying 375 shares.
5. GEVO: Gevo, Inc. moved +10.46%
Gevo rounded out the top five. The alert was timestamped August 24, 2026, at 6:04 p.m. Eastern time. The GEVO Form 4 identifies James J. Barber as a director and reports a Code P purchase of 50,000 common shares at $1.54 on August 21, 2026. The reported transaction value was $77,000.
Gevo's August 5 second-quarter release gave investors several items to process. The company raised its full-year 2026 adjusted EBITDA expectation to more than $60 million, said it expected to generate more than $70 million from Section 45Z tax-credit monetization in the second half of 2026, and said Canada Clean Fuel Regulations credit sales were expected to begin in the third quarter of 2026. The same release reported second-quarter revenue of $46.5 million compared with $43.4 million in the prior-year period, but also reported a large net loss attributable to Gevo because of a one-time, non-cash impairment charge (Gevo Q2 2026 results).
That combination can create a messy market reaction. Investors had to weigh raised adjusted EBITDA expectations, renewable-fuels credit monetization, RNG and ethanol production, debt and cash position, and a major non-cash impairment. Barber's purchase gave the market a new ownership filing to observe, but the business context was already broader than the Form 4 itself.
What these five alerts have in common
The shared pattern is not "all insider buys caused stock gains." The shared pattern is that each row was a public Code P purchase, each alert was timestamped after the Form 4 became available, and each stock recorded a positive next-close move in the supplied report.
| Ticker | Transaction date | Filing detail | Reported value | Reported ownership after purchase |
|---|---|---|---|---|
| OESX | August 20, 2026 | 1,054 shares at $18.9635 | $19,987.53 | 11,405 direct shares, plus 1,602 indirect shares by trust |
| ABCL | August 24, 2026 | 53,613 shares at weighted-average $10.64 | $570,442.32 | 1,373,397 indirect shares, plus 118,245 indirect shares by spouse |
| XELB | August 21 and August 24, 2026 | 22,000 purchase shares across two Code P lines | $19,178.00 | 785,216 direct shares, plus indirect holdings listed separately |
| RHLD | August 20, 2026 | 375 shares at weighted-average $117.84 | $44,190.00 | 3,225 direct shares |
| GEVO | August 21, 2026 | 50,000 shares at $1.54 | $77,000.00 | 120,000 direct shares |
The differences matter more than the headline similarities. ABCL's filing was the largest by reported dollar value, OESX had the largest next-close percentage move, XELB required separating open-market purchase rows from award and tax-withholding rows, RHLD required understanding an asset-management structure, and GEVO had a large non-cash impairment sitting beside raised adjusted EBITDA expectations.
A source-first checklist for these reports
Start with the SEC record. Confirm the reporting person, role, issuer, transaction date, transaction code, shares, price, direct or indirect ownership, and footnotes. This matters because a Form 4 can include open-market purchases, stock awards, tax withholding, gifts, option exercises, and other transactions in the same filing.
Then compare the alert timestamp with recent company news. Earnings releases, clinical data, regulatory updates, capital raises, acquisitions, and sector moves can all be relevant. If the alert arrives after the market close, the "next close" may include overnight news digestion and the next full regular session.
Finally, look at trading mechanics. Smaller or less-liquid stocks can show large percentage moves with limited dollar volume. Wider spreads can make entry and exit assumptions unrealistic. Our guides to liquidity in the stock market and market depth explain why a clean-looking percentage result needs more market-structure context.
Used correctly, Insider Trade Alerts are a starting point for research. They help surface public Form 4 activity quickly and keep the original SEC filing close to the reader's workflow. They do not replace the underlying filing, company research, or risk review.
Frequently asked questions
Did these insider purchases cause the next-day stock moves?
The data in this report does not prove causation. It shows that five public Form 4 purchase alerts were followed by positive next-close moves in the supplied alert report. Earnings, clinical updates, sector conditions, liquidity, and other public information may also have mattered.
Why focus on Code P transactions?
Code P identifies an open-market or private purchase, which is usually the cleanest Form 4 row for a purchase-alert screen. It still needs context. The same filing can include other transaction codes, indirect holdings, weighted-average prices, and footnotes that change the interpretation.
Which filing was the largest by dollar value?
ABCL was the largest among these five rows. Michael R. Hayden reported acquiring 53,613 shares at a weighted-average $10.64, for about $570,442.
Which stock had the largest next-close move?
OESX had the largest next-close move in the supplied report at +19.20%. That does not mean OESX had the largest reported insider purchase or the strongest business setup. It only identifies the largest percentage move in this specific alert-to-next-close screen.
Where should readers verify these transactions?
The SEC Form 4 filing linked in each section is the source of truth. Company releases help explain the surrounding business context, but the transaction facts should come from the SEC filing itself.
Research-not-advice disclosure
This article is for education and public-record research. The Form 4 filings and price observations are informational and are not a recommendation to buy, sell, hold, or trade any security. Historical movement does not predict future performance. Review the original SEC filing, company materials, market data, and your own circumstances before making any financial decision.
Methodology note
The alert timestamps and pnl_1d_close percentages come from the supplied InsiderTradeAlerts 24-hour winners report for August 24-30, 2026. Transaction details were checked against the linked SEC Form 4 filings. Company context was taken from official company releases and investor-relations pages cited inline above. The article does not independently reconstruct every quote, spread, trade, volume bar, or intervening news item in the alert-to-close window.