Transactions
27
Insider / FIRST SOLAR, INC.
Gloeckler Markus
Chief Technology Officer at FIRST SOLAR, INC.
- Company
- FIRST SOLAR, INC.
- Ticker
- FSLR
- First filing on record
- March 3, 2026
- Latest trade on record
- October 1, 2026
- SEC filings
- EDGAR ↗
Gloeckler Markus, Chief Technology Officer at FIRST SOLAR, INC., has disclosed 27 transactions in FSLR since March 3, 2026: 0 purchases (0 open-market buys) and 13 sales, worth about $3.1M at the reported prices. The latest was filed October 2, 2026, 1 day after the trade.
Open-market buys
0
Sales
13
Avg. disclosure lag
2.3d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Gloeckler Markus made no purchases and 13 sales worth $3.1M, plus 14 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
Gloeckler Markus has traded 1 stock on record; the largest by dollars is FSLR.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 8 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| S | Open-market sale | 13 | 15,032 | $3.1M |
| M | Option exercise or conversion | 12 | 9,944 | — |
| A | Grant or award | 2 | 10,131 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 27 | 0 | 13 · $3.1M |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| FSLR | Sell S | October 1, 2026 | October 2, 2026 | 1d | 800 | $174 | $139K | 10b5-1 plan | Form 4 ↗ | |
| FSLR | Sell S | September 1, 2026 | September 2, 2026 | 1d | 800 | $200 | $160K | 10b5-1 plan | Form 4 ↗ | |
| FSLR | Sell S | August 4, 2026 | August 5, 2026 | 1d | 829 | $248 | $206K | 10b5-1 plan | Form 4 ↗ | |
| FSLR | Sell S | August 3, 2026 | August 5, 2026 | 2d | 2,625 | $218 | $572K | 10b5-1 plan | Form 4 ↗ | |
| FSLR | Sell S | August 3, 2026 | August 5, 2026 | 2d | 800 | $222 | $178K | 10b5-1 plan | Form 4 ↗ | |
| FSLR | Option / conversion M | May 4, 2026 | May 5, 2026 | 1d | 968 | — | — | derivative | Form 4 ↗ | |
| FSLR | Sell S | May 5, 2026 | May 5, 2026 | 0d | 420 | $216 | $91K | Form 4 ↗ | ||
| FSLR | Option / conversion M | May 4, 2026 | May 5, 2026 | 1d | 968 | — | — | Form 4 ↗ | ||
| FSLR | Option / conversion M | March 13, 2026 | March 17, 2026 | 4d | 854 | — | — | derivative | Form 4 ↗ | |
| FSLR | Sell S | March 16, 2026 | March 17, 2026 | 1d | 368 | $201 | $74K | Form 4 ↗ | ||
| FSLR | Option / conversion M | March 13, 2026 | March 17, 2026 | 4d | 854 | — | — | Form 4 ↗ | ||
| FSLR | Other A | March 6, 2026 | March 10, 2026 | 4d | 3,066 | — | — | derivative | Form 4 ↗ | |
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 1,067 | — | — | derivative | Form 4 ↗ | |
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 852 | — | — | derivative | Form 4 ↗ | |
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 471 | — | — | derivative | Form 4 ↗ | |
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 760 | — | — | derivative | Form 4 ↗ | |
| FSLR | Sell S | March 9, 2026 | March 10, 2026 | 1d | 448 | $190 | $85K | Form 4 ↗ | ||
| FSLR | Sell S | March 9, 2026 | March 10, 2026 | 1d | 358 | $190 | $68K | Form 4 ↗ | ||
| FSLR | Sell S | March 9, 2026 | March 10, 2026 | 1d | 199 | $190 | $38K | Form 4 ↗ | ||
| FSLR | Sell S | March 9, 2026 | March 10, 2026 | 1d | 320 | $190 | $61K | Form 4 ↗ | ||
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 1,067 | — | — | Form 4 ↗ | ||
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 852 | — | — | Form 4 ↗ | ||
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 471 | — | — | Form 4 ↗ | ||
| FSLR | Option / conversion M | March 6, 2026 | March 10, 2026 | 4d | 760 | — | — | Form 4 ↗ | ||
| FSLR | Sell S | March 4, 2026 | March 5, 2026 | 1d | 3,640 | $197 | $717K | 10b5-1 plan | Form 4 ↗ | |
| FSLR | Sell S | March 3, 2026 | March 3, 2026 | 0d | 3,425 | $196 | $671K | Form 4 ↗ | ||
| FSLR | Other A | February 27, 2026 | March 3, 2026 | 4d | 7,065 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| October 2, 2026 | Form 4 | 0001274494-26-000186 | 1 | published | EDGAR ↗ |
| September 2, 2026 | Form 4 | 0001274494-26-000182 | 1 | published | EDGAR ↗ |
| August 5, 2026 | Form 4 | 0001274494-26-000176 | 3 | published | EDGAR ↗ |
| May 5, 2026 | Form 4 | 0001274494-26-000119 | 3 | published | EDGAR ↗ |
| March 17, 2026 | Form 4 | 0001274494-26-000077 | 3 | published | EDGAR ↗ |
| March 10, 2026 | Form 4 | 0001274494-26-000062 | 13 | published | EDGAR ↗ |
| March 5, 2026 | Form 4 | 0001274494-26-000051 | 1 | published | EDGAR ↗ |
| March 3, 2026 | Form 4 | 0001274494-26-000040 | 2 | published | EDGAR ↗ |
Other insiders at FIRST SOLAR, INC.
- Widmar Mark R Chief Executive Officer 59 rows
- ANTOUN GEORGES Chief Commercial Officer 34 rows
- Sloan Samantha L. EVP, Corporate Affairs 30 rows
- Verma Kuntal Kumar Chief Manufacturing Officer 30 rows
- Bradley Alexander R. Chief Financial Officer 27 rows
- Theurer Nathan B. VP - Global Controller and CAO 25 rows
- Dymbort Jason E. General Counsel and Secretary 24 rows
- Koralewski Michael Chief Supply Chain Officer 23 rows
- Buehler Patrick James Chief Product Officer 22 rows
- Stockdale Caroline Chief People and Comm. Officer 22 rows
Everyone on file, with contracts and lobbying under the company's name: FIRST SOLAR, INC..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Rule 10b5-1 trading plans The plan must be set up when the insider has no important non-public information.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 8 | 27 | March 3, 2026 | October 2, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.