H.B. Fuller Co. (FUL) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 6, 2026.
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- Filings shown
- 38
- Open-market buys
- 9
- Open-market sells
- 1
- Buys, 10b5-1 box not checked
- 9 of 9
Counts cover the 38 most recent Form 4 filings Tradune holds for FUL (filed Jul 7 – Oct 6, 2026); the score below covers only the trailing 90 days (9 buys, 1 sell). No completed check of FUL's Form 4 list on SEC EDGAR is on record yet; the latest FUL filing Tradune holds was filed Oct 6, 2026. This is not guaranteed to be the complete record — see FUL's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 25 filings Tradune holds for FUL filed Aug 3 – Oct 6, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
1 open-market sale by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 0 sales· 0 sh
- checkbox disclosed
- On filings with the box not checked
- 1 sale· 9,561 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Trangsrud Teresa J. RasmussenDirector | 2 | 0 | 2,042 | — | +$99,984 |
| Srilata ZaheerDirector | 2 | 0 | 2,040 | — | +$100,119 |
| Nathan D. WeaverExec VP, Business Transform. | 0 | 1 | — | 9,561 | −$593,332 |
| Daniel L. FlornessDirector | 1 | 0 | 2,030 | — | +$100,160 |
| Charles T. LauberDirector | 1 | 0 | 2,005 | — | +$99,985 |
| Thomas W. HandleyDirector | 1 | 0 | 2,000 | — | +$98,820 |
| Michael J. HappeDirector | 1 | 0 | 2,000 | — | +$99,250 |
| Celine Christine MartinDirector | 1 | 0 | 465 | — | +$22,998 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
Weekly signal history
FUL appeared in 1 archived weekly edition as a multi-insider cluster, a top net buyer, or both. These are frozen weekly snapshots, not a complete filing history.
- Week of Oct 7, 2026 7 insiders buying · $27,984 net
An entry means this company met that edition’s displayed cluster or top-buyer threshold. Missing weeks do not mean no insider transaction occurred. All figures are derived from SEC Form 4 filings; open-market buys minus sales are shown as net only when every transaction value was disclosed.
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at FUL
Insiders reported 9 open-market purchases of FUL between Jul 7, 2026 and Oct 6, 2026, across 7 distinct buyers. The most recent purchase was reported by Celine Christine Martin (Director) on Sep 30, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Performance Stock Units | 453 | $50.20 | — | — | Oct 4, 2026 |
| Tax withholding | 141 | $50.20 | 6,742 | −2.0% | Oct 4, 2026 |
| Tax withholding | 61 | $50.20 | 6,883 | −0.9% | Oct 4, 2026 |
| Grant / award | 19 | $50.20 | 6,944 | +0.3% | Oct 4, 2026 |
| Option exercise | 202 | $50.20 | 6,925 | +3.0% | Oct 4, 2026 |
| Option exercise | 453 | $50.20 | 6,723 | +7.2% | Oct 4, 2026 |
| Option exercise Restricted Stock Units | 202 | $50.20 | — | — | Oct 4, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Restricted Stock Units | 1,300 | — | — | — | Sep 30, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 465 | $49.50 | 465 | — | Sep 30, 2026 |
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 2,000 | $49.63 | 3,343 | +149% | Sep 29, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 2,005 | $49.87 | 3,356 | +148% | Sep 29, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 40 | $49.97 | 3,386 | +1.2% | Sep 29, 2026 |
| Open-market purchase 10b5-1 box not checked | 2,000 | $49.06 | 3,346 | +149% | Sep 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 2,030 | $49.34 | 3,381 | +150% | Sep 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 2,000 | $49.41 | 2,000 (indirect) | — | Sep 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 1,542 | $48.96 | 3,553 (indirect) | +77% | Sep 28, 2026 |
| Open-market purchase 10b5-1 box not checked | 500 | $48.98 | 4,053 (indirect) | +14% | Sep 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 252 | $50.06 | — | — | Sep 25, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 45 | $50.06 | — | — | Sep 25, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 244 | $51.60 | — | — | Sep 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 43 | $51.60 | — | — | Sep 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Stock Units | 1,171 | $56.35 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Stock Units | 586 | $56.35 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Stock Units | 488 | $56.35 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Stock Units | 610 | $56.35 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Stock Units | 390 | $56.35 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 224 | $56.35 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 40 | $56.35 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 201 | $62.75 | — | — | Aug 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 36 | $62.75 | — | — | Aug 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 4,585 | $53.57 | 21,300 | +27% | Aug 11, 2026 |
| Option exercise | 4,976 | $50.10 | 16,715 | +42% | Aug 11, 2026 |
| Option exercise Employee Stock Option (Right-to-Buy) | 4,976 | $50.10 | — | — | Aug 11, 2026 |
| Option exercise Employee Stock Option (Right-to-Buy) | 4,585 | $53.57 | — | — | Aug 11, 2026 |
| Open-market sale 10b5-1 box not checked | 9,561 | $62.06 | 11,739 | −45% | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 228 | $55.30 | — | — | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Units | 40 | $55.30 | — | — | Jul 31, 2026 |
Listing the 25 most recent of 38 Form 4 filings held for FUL; the 13 older filings (filed Jul 7 – Jul 20, 2026) are counted above but not listed here — see FUL's full Form 4 filing history on SEC EDGAR.
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to FUL's (Oct 6, 2026).
Frequently asked about FUL insider activity
How many insiders bought FUL stock in these Form 4 filings?
7 distinct insiders at H.B. Fuller Co. reported 9 open-market purchases (Form 4 code P) of FUL shares between Jul 7, 2026 and Oct 6, 2026, the most recent filed by Celine Christine Martin (Director) on Sep 30, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for FUL?
The most recent Form 4 on this page was filed by Gregory O. Ogunsanya (Sr. VP, GC and Corp Secretary) on Oct 6, 2026, reporting 7 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market FUL insider sale shown?
The largest open-market sale among the filings shown was 9,561 FUL shares at $62.06 (about $593,332) by Nathan D. Weaver (Exec VP, Business Transform.) on Aug 11, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
Do the recent FUL insider purchases have the Form 4 10b5-1 box checked?
No. All 9 FUL open-market purchases shown were reported with the Rule 10b5-1 box not checked. A blank box records what the filer disclosed; it does not prove that no plan exists. Latest: Celine Christine Martin (Director) on Sep 30, 2026, 465 shares.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track FUL insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.