SEC FORM 3

SEC FORM 3SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Speidel Thomas

(Last)

(First)

(Middle)

C/O ADS-TEC ENERGY PUBLIC LTD CO

10 EARLSFORT TERRACE

(Street)

DUBLIN 2

T380 D02

(City)

(State)

(Zip)

IRELAND

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Ads-Tec Energy Public Ltd Co [ ADSE ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ordinary Shares, $0.0001 nominal value per share	254,439⁽¹⁾	D
Ordinary Shares, $0.0001 nominal value per share	18,020,882	I	Via ads-tec Energy GmbH. See Footnote⁽²⁾

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Non-Qualified Stock Options	03/31/2026	03/31/2032	Ordinary Shares	355,000⁽³⁾	$8.62	D
Non-Qualified Stock Options	07/05/2027	07/05/2033	Ordinary Shares	406,250⁽⁴⁾	$6	D
Non-Qualified Stock Options	04/15/2028	04/15/2034	Ordinary Shares	153,100⁽⁵⁾	$10.44	D
Non-Qualified Stock Options	05/01/2029	05/01/2035	Ordinary Shares	120,818⁽⁶⁾	$13.45	D
Warrants	08/26/2025	08/26/2026	Ordinary Shares	800,000	$6.2	D

Explanation of Responses:

1. Granted pursuant to the issuer's 2021 Omnibus Incentive Plan. Each restricted stock unit ("RSU") represents a contingent right to receive one ordinary share of the issuer, nominal value $0.0001 per share ("Ordinary Share"). Of the RSUs reported, (i) 127,170 are fully vested, (ii) 54,167 were granted on 7/5/23 and will vest in four equal installments commencing the first anniversary of the grant date, (iii) 31,130 were granted on 4/15/24, and will vest in four equal installments commencing the first anniversary of the grant date, (iv) 9,217 were granted on 9/23/24 and will vest in full upon the one-year anniversary of the grant date, (v) 24,164 were granted 5/1/25, and will vest in four equal installments commencing the first anniversary of the grant date, and (vi) 8,591 were granted on 9/26/25, and will vest in full upon the one-year anniversary of the grant date.

2. Mr. Speidel is the chief executive officer of ads-tec Energy GmbH and may be deemed to beneficially own the securities held by ads-tec Energy GmbH. Mr. Speidel disclaims beneficial ownership of any securities held by ads-tec Energy GmbH other than to the extent of his pecuniary interests therein, directly or indirectly.

3. Granted pursuant to the issuer's 2021 Omnibus Incentive Plan. 355,000 non-qualified stock options ("NQOs") were granted on March 31, 2022. The reported number of NQOs represent (i) 266,250 vested and unexercised NQOs and (ii) 88,750 outstanding NQOs which will vest in full on the fourth anniversary of the grant date.

4. Granted pursuant to the issuer's 2021 Omnibus Incentive Plan. 406,250 NQOs were granted on July 5, 2023. The reported number of NQOs represent (i) 203,124 vested and unexercised NQOs and (ii) 203,126 unvested NQOs that will vest in two equal installments commencing the third and fourth anniversary of the grant date.

5. Granted pursuant to the issuer's 2021 Omnibus Incentive Plan. 153,100 NQOs were granted on April 15, 2024. The reported number of NQOs represent (i) 38,275 vested and unexercised NQOs and (ii) 114,825 unvested NQOs which will vest in three equal installments commencing the second, third, and fourth anniversary of the grant date.

6. Granted pursuant to the issuer's 2021 Omnibus Incentive Plan. 120,818 NQOs were granted on May 1, 2025 and will vest in four equal installments commencing the first anniversary of the grant date.

	/s/ Thomas Speidel	03/26/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

SEC Form 3 filed by new insider Speidel Thomas