Comparable stake leader
ARC Family Trust
SEC ownership of FTC Solar, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001828161.
Disclosed value leader
South Cone Investments Limited Partnership
Comparable rows
2/50
Latest evidence
07 May 2026
- Public ticker
- FTCI on Nasdaq
- Parsed ownership sources
-
3/4/5, 13D/G, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
ARC Family Trust
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
2 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
ARC Family Trust
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
07 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001828161
- Issuer location
- Austin, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of FTC Solar, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
ARC Family Trust
Disclosed value leader
South Cone Investments Li...
Comparable rows
2/50
Latest evidence
07 May 2026
3/4/5
13D/G
13F
Lead comparable stake: 12%
48 rows are not safely comparable across share classes.
13D/G row: ARC Family Trust
Showing 1-8 of 50 holder rows.
Quick read
ARC Family Trust leads the comparable SEC ownership view at 12%.
2 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens ARC Family Trust's linked filing trail.
Comparable ownership
Top 2
ARC Family Trust
12%
David Springer
5.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| ARC Family Trust |
3/4/5
13D/G
10%+ Owner · Shaker Sadasivam
|
12%
from 13D/G
|
$8,680,326
11,890,857 shares
|
— | 14 Sep 2023 |
| David Springer |
3/4/5
13D/G
Director
|
5.3%
from 13D/G
|
$6,477,849
722,209 shares
|
-$898,000 | 18 Nov 2025 |
| South Cone Investments Limited Partnership |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$10,853,342
14,867,592 shares
|
— | 13 Dec 2022 |
| Yann Brandt |
3/4/5
Chief Executive Officer, Director
|
—
mixed-class rows
|
$9,060,879
1,176,425 shares
mixed-class rows
|
-$409,376 | 30 Dec 2025 |
| Sasan Aminpour |
3/4/5
Chief Operating Officer
|
—
mixed-class rows
|
$2,948,192
419,734 shares
mixed-class rows
|
-$35,402 | 15 Jan 2026 |
| Anthony Carroll |
3/4/5
Chief Executive Officer, Director
|
—
class O/S missing
|
$2,200,190
641,455 shares
|
+$126,248 | 06 May 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
class O/S missing
|
$1,682,399
445,079 shares
|
— | 31 Mar 2026 |
| Cathy Behnen |
3/4/5
CHIEF FINANCIAL OFFICER
|
—
mixed-class rows
|
$1,568,826
293,534 shares
mixed-class rows
|
-$17,991 | 30 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$1,114,004.
Buys
$246,765
Insiders: 3
Sells
$1,360,769
Insiders: 4
Net
-$1,114,004
Shares: -92,747
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 49,913
Shares: 142,660
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 39,275 | 0 | $145,385 | $0 | +$145,385 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 10,638 | 142,660 | $101,380 | $1,360,769 | -$1,259,389 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 24 reporting-owner rows connected to FTC Solar, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
24
Largest Forms 3/4/5 holder
South Cone Investments Limited Partnership
Net 12M change
-$1,114,003
Latest report
07 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| South Cone Investments Limited Partnership | 10%+ Owner | $10,853,342 | Mixed | 13 Dec 2022 | ||
| Yann Brandt | Chief Executive Officer, Director | $9,060,879 | -$409,376 | -4.3% | Filing P/S | 30 Dec 2025 |
| ARC Family Trust | 10%+ Owner | $8,680,326 | Mixed | 14 Sep 2023 | ||
| David Springer | Director | $6,477,849 | -$898,000 | -12% | Mixed | 18 Nov 2025 |
| Sasan Aminpour | Chief Operating Officer | $2,948,192 | -$35,402 | -1.2% | Filing P/S | 15 Jan 2026 |
| Anthony Carroll | Chief Executive Officer, Director | $2,200,190 | +$126,248 | +6.1% | Filing P/S | 06 May 2026 |
| Cathy Behnen | Chief Financial Officer | $1,568,826 | -$17,991 | -1.1% | Filing P/S | 30 Dec 2025 |
| Shaker Sadasivam | Director | $1,442,042 | +$99,993 | +7.5% | Mixed | 06 May 2026 |
| Nagendra Cherukupalli | Chief Technology Officer | $1,365,434 | Mixed | 06 Jun 2023 | ||
| Ahmad R. Chatila | Director | $951,248 | Mixed | 12 Jun 2025 | ||
| Patrick Cook | Chief Commercial Officer | $763,570 | Mixed | 20 Mar 2024 | ||
| Cortes Isidoro Alfonso Quiroga | Former Director | $634,852 | Filing P/S | 19 Aug 2024 | ||
| Thurman J. Rodgers | Former Director | $585,868 | Mixed | 06 Apr 2023 | ||
| Sean Hunkler | President & CEO, Director | $489,293 | Mixed | 13 Apr 2023 | ||
| Ali Mortazavi | Evp, Global Sales And Mktng | $474,204 | Mixed | 08 Mar 2022 | ||
| Kristian Nolde | Vp, Marketing And Strategy | $254,564 | Mixed | 08 Sep 2023 | ||
| William A. Priddy | Director | $223,484 | Mixed | 12 Jun 2025 | ||
| Antonio R. Alvarez | Director | $216,927 | +$20,525 | +10% | Filing P/S | 07 May 2026 |
| Lisan Hung | Director | $184,828 | Mixed | 12 Jun 2025 | ||
| Robert Phelps Morris | Former Chief Financial Officer | $126,468 | Filing P/S | 13 Dec 2023 |
Recent insider transactions for FTC Solar, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Antonio R. Alvarez | FTCI | Common Stock | Purchase | 5.12% | $10,575 | $4.23 | 2,500 | 51,283 | 07 May 2026 | Direct |
| Antonio R. Alvarez | FTCI | Common Stock | Purchase | 5.4% | $9,950 | $3.98 | 2,500 | 48,783 | 06 May 2026 | Direct |
| Anthony Carroll | FTCI | Common Stock | Purchase | 1.14% | $24,868 | $3.43 | 7,250 | 641,455 | 06 May 2026 | Direct |
| Shaker Sadasivam | FTCI | Common Stock | Purchase | 49.6% | $99,992 | $3.70 | 27,025 | 81,508 | 06 May 2026 | Direct |
| Anthony Carroll | FTCI | Common Stock | Award | 1754.1% | 600,000 | 634,205 | 04 May 2026 | Direct | ||
| Sasan Aminpour | FTCI | Performance Stock Unit | Award | 20% | 25,000 | 150,000 | 15 Jan 2026 | Direct | ||
| Cathy Behnen | FTCI | Common Stock | Sale | -1.13% | $17,991 | $10.93 | -1,646 | 143,534 | 30 Dec 2025 | Direct |
| Sasan Aminpour | FTCI | Common Stock | Sale | -1.19% | $35,402 | $10.93 | -3,239 | 269,734 | 30 Dec 2025 | Direct |
| Yann Brandt | FTCI | Common Stock | Sale | -4.64% | $409,376 | $10.84 | -37,775 | 776,425 | 30 Dec 2025 | Direct |
| Anthony Carroll | FTCI | Common Stock | Purchase | 78.4% | $101,380 | $9.53 | 10,638 | 24,205 | 16 Dec 2025 | Direct |
| Anthony Carroll | FTCI | Common Stock | Award | 13,567 | 13,567 | 15 Dec 2025 | Direct | |||
| Yann Brandt | FTCI | Common Stock | Gift | -0.31% | -2,500 | 814,200 | 02 Dec 2025 | Direct | ||
| David Springer | FTCI | Common Stock | Sale | -12.7% | $898,000 | $8.98 | -100,000 | 689,222 | 18 Nov 2025 | Direct |
| Sasan Aminpour | FTCI | Performance Stock Unit | Award | 125,000 | 125,000 | 20 Oct 2025 | Direct | |||
| Cathy Behnen | FTCI | Performance Stock Unit | Award | 150,000 | 150,000 | 20 Oct 2025 | Direct | |||
| Yann Brandt | FTCI | Performance Stock Unit | Award | 400,000 | 400,000 | 20 Oct 2025 | Direct | |||
| Antonio R. Alvarez | FTCI | Common Stock | Award | 85.1% | 21,283 | 46,283 | 05 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.